There Is No Kill Like Overkill/Literature

Examples of in  include:

Discworld

 * The craziness of Jonathan Teatime in the Hogfather is established with a recounting of him doing this during an assassination mission. He was supposed to kill an elderly noble, and rather than drugging the guy's dog as would be typical, he nails it to a wall, kills two servants who were witnesses, and kills his victim so violently that his head is several feet from his body.
 * It's a good thing he did the trick with the spoon where you hold it in front of a victim's mouth to check if he's still breathing. Can never be too sure. Hm hm.
 * Special mention needs to go to the Piecemaker, though. There is a reason people generally endeavour to be a good distance directly behind Detritus when he fires the thing.
 * To elaborate: The Piecemaker is a converted siege ballista, designed to send 5-foot iron poles through fortifications. Its wielder, Sergeant Detritus, felt that this was a waste of a shot, so instead uses sheaves of regular arrows -- hundreds of regular arrows. This means that, fully wound, it's effectively a shotgun that fires at near escape-velocity.
 * The Piecemaker is described as "a siege cross-bow that three men couldn't lift, [Detritus] had converted it to fire a thick sheaf of arrows all at once. Mostly they shattered in the air because of the forces involved, and the target was hit by an expanding cloud of burning splinters. Vimes had banned him from using it on people, but it was a damn good way of getting into buildings. It could open the front door and the back door at the same time.

Other works

 * The end of Mostly Harmless has because Douglas Adams was sick of being asked for more sequels. The radio drama.
 * To Ciaphas Cain's Mari Magot, overkill is inherently meaningless.
 * In The Traitor's Hand, a Chaos Space Marine is noted as having been killed "with satisfying thoroughness" by two krak missiles and a lascannon, each of which is an anti-tank weapon on its own.
 * It's hard to say if the refinery-cum-fuel-air bomb in Caves of Ice was "overkill" or "just enough kill", given that it was used on Necrons, but its blast wave was felt in orbit.
 * The Star Wars Expanded Universe novel Death Star describes its use as "overkill in the most horrifyingly literal way possible". And indeed, blowing up a pacifistic planet just to Kick the Dog is clearly overdoing it.
 * Another example of overkill in the Expanded Universe is Base Delta Zero, a naval protocol dedicated to eliminating all assets of production on a planet. This varies from rendering the planet uninhabitable and for all intents and purposes useless, to outright slagging the crust.
 * For that matter, the Expanded Universe seems to have a good amount of overkill--the Sun Crusher fires a pulse torpedo into a star to cause it to go supernova, killing the star system at large; the Centerpoint Station does this by firing a pulse blast through hyperspace to hit its target! Emperor Palpatine seems to have been particularly fond of these.
 * Palpatine didn't create Centerpoint, that was The Precursors. Palpatine did, however, create the Galaxy Gun which does pretty much the same thing. And the Galaxy Gun was destroyed by being rammed by a Star Destroyer, so it's a double example of this trope.
 * On a more personal scale, the New Jedi Order novel Star By Star features both the New Republic and Yuuzhan Vong revealing their newly-developed infantry. The Republic fields YVH "Yuuzhan Vong Hunter" battle droids capable of dueling starfighters and winning, and capable of incredible feats of precision, correctly identifying and gunning down infiltrators in a crowd of humans without harming the civilians; YVH droids commonly go ten-to-one against standard Vong warriors and win. On the other side, the Vong begin deploying voxyn, Jedi-hunting beasts designed and shaped to be the ultimate killing machines, featuring razor-sharp claws and teeth, acid spit, blood that is both acidic and a neurotoxin, a deadly selection of retroviruses that live on their skin and spines, disorienting sreeches, and neural-shock attacks. The voxyn ultimately lose, due to Crippling Overspecialization -- they're weak against More Dakka.
 * In the Halo expanded universe human ships ended up carrying salvos of "archer" anti-ship missiles that could decimate a human fleet (one archer could severely damage a destroyer) just to take down the shields of a covenant frigate. Justified that Covenant frigates can withstand tactical nuclear weapons.
 * Nukes don't have quite the same bang in space as they do on a planet. With no medium for the shockwave, the destructive range is only limited to a few miles, provided the target has sufficient shielding against radiation and EMP. There's a reason MAC rounds work much better than nukes.
 * Perhaps the ultimate example of this trope in any form of media is found in The Ringworld Throne. Tunesmith, the Night Person Protector, uses the Ringworld's meteor defense to shoot down invading starships. Said defense is an X-Ray laser powered by magnetically-fluorescent solar flares (yes, you read that right), creating a beam with enough width and power to vaporize - not "cause to explode into tiny chunks," but convert from solid into gaseous state - a planet.
 * Actually, vaporizing a planet is easier than blowing it completely apart. If you achieve one but not the other, most of the vapour will stay in the planet-sized fireball, due to gravity. The Millennium Falcon should have encountered an uncharted emission nebula, not uncharted asteroids.
 * Lampshaded in Homeland by R.A. Salvatore. While he and Alton are being swarmed by spiders, Masoj looks down at his crossbow in contemplation and remarks, "Overkill?"
 * Alton then, of course, drops a fireball at his feet in an attempt to exterminate the spiders. Overkill and Kill It with Fire. Two tropes that go hand-in-hand.
 * Robert A. Heinlein disapproves of this trope. As he has Sergeant Zim from Starship Troopers comment, war is controlled violence, not killing for its own sake, and there are times where it would as foolish to destroy an enemy city with H-bombs as it would be to punish a baby by decapitating it.
 * That being said, since it is determined to be impossible to effectively remove Bugs from a planet once they entrench themselves, the humans build a weapon that completely destroys entire planets and are using it by the end of the book.
 * In 'Cardinal of the Kremlin' Tom Clancy remarks that the main problem with nukes is leaving enough enemy command structure intact that you can conduct post-conflict negotiations.
 * The Star Wars Expanded Universe has numerous cases of insane death machines like the Death Star, the Sun Crusher, and the World Devastators. There are also cases of species doing this, such as the Yevetha and Yuunzhan Vong, who are so fanatical they see winning a war as exterminating the enemy race.
 * The Bothans, with the death of Borsk Fey'la and the disintegration of the New Republic, declare Ak'Rai, a form of total war that they have only done twice in their history. It calls for every capable Bothan to lend their maximum effort towards defeating their opponent, killing every last male, female, and child of the species, slag their home planet to dust, and erase them from history.
 * It wouldn't be an overkill thread without the Lensmen. When you're dealing with a planet, sure, no weapon is too powerful - but a fleet? The enemy's surviving ships (a fairly large number is implied) are huddled into the ideal globular defensive formation, weapons pointed out, shields mutually reinforcing... and the good guys direct several planets into the centre of mass, in addition to multiple planet-sized antimatter bombs. Yes, you read that right. Subverted slightly in that even after all this butchery is done, there are still a few survivors to be finished off.
 * Not to mention the devices used to destroy Ploor - not satisfied with ONE planet moving at fifteen times the speed of LIGHT, aimed at the planet, they fix up a second, identical one to fire at Ploor's sun. They then have to finish off the war ASAP because they're aware that they've finally created the universe's only unstoppable weapon, and if they don't beat the Big Bad within DAYS TO WEEKS, he'll duplicate it and they'll be fucked.
 * Earlier on in the series, the good guys are faced with the problem of how to defeat the enemy fleet. The solution - build hundreds of specialised starships that are either all defence shields (and no weapons or even human crew) or sluggers with all weapons (and no shields) and assemble them into a gigantic cylinder held together by networks of tractor beams and pressors (the opposite of tractors). The cylinder then flies straight down the throat of the enemy fleet's fire, and when the enemy ships enter its mouth a network of pressors drives them into a single file down the axis of the tube, where each faces odds of between eighty and 200 to one when it gets to the sluggers. At the end, A FRACTION OF ONE PER CENT of the non-remote-controlled ships have been lost, while the enemy is too disorganised to continue fighting.
 * This shows up a bit in The Dresden Files.
 * The best example of this is when, after a Duke of the Red Court of Vampires cheated in a duel against Harry, Ebenezar McCoy
 * What does Morgan do when confronted with an Eldritch Abomination? This happened to be back in The Fifties, so he lured it to a nuclear weapon testing ground and leaves it there. On the day of a test.
 * There is a collection of short stories set in the Warhammer 40,000 universe that's entitled "Planetkill".
 * In The Magician's Nephew, Jadis is described as having been Queen of a world that is ruined when the protagonists come upon it. The reason? Her sister wanted the throne. Instead of killing her and being done with it, Jadis finds and uses the Unspeakable Word, with the result that everyone but herself dies.
 * Granted, as described, the sister had overcome Jadis' armies and captured her (as a prelude to execution) when she used it.
 * Perry Rhodan: has Arkon Bombs. Thrown on a planet the planet itself transforms into a nuclear weapon.
 * They have a device called Transform Cannon that teleports ignited Nukes, Fusion Bombs or even above mentioned Arkon Bombs inside other ships over a distance of million of miles. (Given they are not fitted with >= 5D-Shields. Then they detonate right on the shield perimeter.)
 * In the Dale Brown novel Act of War, Zakharov sends several squads of men with anti-tank weapons and a helicopter gunship to kill one man. Naturally, when he goes after bigger targets he scales up accordingly. In Executive Intent a Mjolnir/Thor's Hammer orbit-launched kinetic kill vehicle, capable of causing massive casualties on impact with the ground, is fired at a Russian fighter jet, destroying it so thoroughly that it is reduced to so much dust. The Chinese assault on Mogadishu is also brutally thorough: If even a shot of enemy fire is detected from a building, the Chinese do not try to storm the building - they just level the bloody thing. Any gathering of people that might be construed as regrouping enemy units is cut down to the last man even if it is ostensibly civilians trying to recover their dead.
 * In Ender's Game, the M.D. Device, known as the Little Doctor, causes one atom to explode, then spreads to every other atom around it, causing it to explode. Ender uses this to destroy a planet and two entire fleets.
 * More specifically, it's a field effect of limited range where the atoms within the field detonate and expand the field slightly. It doesn't work on photons though, so any planet-based chain reaction will cease after a short expansion into space, rather than running wild and destroying the entire galaxy.
 * The Congress's reaction to finding out about is to, especially since.
 * Kelsier of the Mistborn series certainly has his moments. If you ask him, any member of the nobility, or any one working for a member of the nobility is little better than cannon fodder.
 * One of the first times the Royal Manticoran Navy effectively fields its new missile pod technology in a fleet action, combined with its new long-range missiles that allow the fleet to start firing missiles long before they get within "normal" combat range, results in the enemy fleet getting obliterated almost before they can get a shot off. The number of missiles number in the tens of thousands, so many that a significant percentage are killed by other missiles as warheads detonate and another large percentage don't hit anything at all as there's only an expanding cloud of vapour instead of a target. The Solarian Navy, who have not been paying attention to this advance, have a fleet similarly obliterated after a skirmish with the Manticorans, and the Haven fleet at the end of Misison of Honor,, are confident they will do the same to yet another Sollie fleet.
 * Rand Al'Thor in The Wheel of Time series has used this more than once. A scene in The Gathering Storm is particularly noteworthy: He has finally tracked down Graendal to her castle. She is a noted Chessmaster, and Rand doubts that he can outwit her. So instead, he sends in a pawn, a minor nobleman who's stupid, power-hungry and easily manipulated, as a messenger. She uses Mind Control on the nobleman and sends him back to Rand, treating it as the start of an intricate game of backup plans and countermoves. It turns out that Rand was prepared for that; he detects signs of the Mind Control, takes that as solid confirmation of Graendal's presence, pulls out his biggest Amplifier Artifact, and drops a Magical Nuke on her, erasing the entire castle and everyone in it from existence., so it fits this trope.
 * In The Merchant Princes Series, a Cycle of Revenge quickly becomes this. When knowledge of the Clan, a dimension-traveling group of smugglers, comes to the attention of the government, President Evil tries to Nuke'Em because of the potential security risk they represent..
 * In the Bolo novels, the 'Final War' against the Melconian Empire ended like this. The Terran Concordiat declared that every single planet in the Empire be completely cleansed of life. The Melconians made a similar declaration against the Concordiat at about the same time. Both succeeded. The war ended with both nations reduced to a few scattered remnants desperately searching for a planet that could still support life. Since the fragments of the Concordiat were slightly larger, they can arguably claim victory.
 * Troy Rising:
 * Pretty much the basis for armament design of the Troy and it's sister Battle Globes, as well as the SAPL network and it's Ung lasers.
 * The trope title is nearly quoted word for word in The Hot Gate, in regards to 20,000 human missiles sent at a Rangoran AV that had its point defense systems almost completely destroyed.
 * death in Warrior Cats. Killed by
 * One of the Man-Kzin Wars collections contains the story of a ship called Catskinner, which is a crewed ramscoop ship that has a largish number of 500-pound chunks of iron that it drops shortly before reaching its target system. It slows down by hitting the star. For those lacking a grasp of the scale, the effect is like a relativistic shotgun blast the size of an entire star system. This was the diversion for the real mission, which was to insert (two teams of) assassins to kill the recently arrived representative of the Kzinti central government before he could mount a successful invasion of Earth. This manages to be both overkill (for a diversion) and under-kill given what they could have done to the system...