Indigo

Long ago, a great crisis destroyed and remade the world. Generations later, the people of the Southern Isles know better than to go near the Tower of Regrets.

But Princess Anghara, driven by curiosity and resentment of her sheltered life, breaks that ancient law. Seven demons break loose and destroy all that she holds dear. And Anghara—now calling herself Indigo—is granted immortality by a divine emissary, so as to have time to undo what she has wrought.

This Low Fantasy series, written by the late British author Louise Cooper, has been called "an original take on the Pandora's Box myth."

The eight books in the series are:
 * Nemesis (1989)
 * Inferno (1989)
 * Infanta (1990)
 * Nocturne (1990)
 * Troika (1991)
 * Avatar (1992)
 * Revenant (1993)
 * Aisling (1994)


 * Action Girl: Indigo is something of one.
 * The Ageless: Indigo and Grimya, maybe. They do not age, but even they don't know whether they can be killed by injury or disease.
 * Big Badass Wolf: Grimya.
 * Beauty Equals Goodness: Several hard subversions. Conversely, Niahrin in Aisling is decidedly a good character; and, while she's attractive enough otherwise, half of her face is horribly scarred.
 * Beauty Is Bad: While not every attractive character is evil, most of the evil characters are attractive (and immediately described so). Somewhat subverted by Indigo herself; she's stated several times to be fairly attractive, although not much focus is put on her looks.
 * Bittersweet Ending: The endings of several specific books count as well.
 * Blessed with Suck/Cursed with Awesome: How Indigo's immortality and Grimya's speech and telepathy are treated . (Grimya's immortality, on the other hand, was a reward for being such a loyal friend, and is never treated otherwise.)
 * Blind Seer: Karim Silkfleet, in Infanta. Niahrin may partially count as well; she has the second sight in her bad left eye.
 * Call a Rabbit a Smeerp/Horse of a Different Color: A "chimelo" is either a dromedary (as described by someone with no point of reference except horses) or a sort of impossible camel/horse hybrid.
 * Crap Saccharine World: In Nocturne, Indigo and friends see "a breathtakingly beautiful landscape...redolent with an aura of complete and implacable evil" through one of the demon's doorways.
 * Dark World: Seen in several volumes, notably Nemesis and Nocturne.
 * Dead Little Sister: Jasker's wife, in Inferno.
 * Death of the Hypotenuse
 * Dystopia: Joyful Travail, a town devoted to efficiency at any cost. Also Vesinum, ruled by a brutal demon cult.
 * Elemental Powers: The most obvious example is Jasker, who's a pyromancer and a priest of a fire goddess.
 * Enfant Terrible: Bear in mind that Indigo spends over a decade mistakenly thinking that.
 * Eyepatch of Power: Niahrin, although her eyepatch represents less outright badassery than the fact that her ruined and very unnerving left eye is magic.
 * Good Scars, Evil Scars: Subverted with Niahrin, half of whose face is a mess.
 * Gotta Catch Them All
 * Identical Grandson: Veness, a relative of Fenran's, looks eerily like him.
 * I Want My Beloved to Be Happy: Phereniq Kala will do anything for Augon Hunnamek—who's oblivious to her feelings for him—even if it breaks her heart and ages her before her time.
 * Lady Macbeth: 's scheming does a number on the Bray family. get their just deserts in the end, but it's pyrrhic as hell.
 * Lolicon: Augon Hunnamek plans to marry Jessamin on her twelfth birthday.
 * Love Hurts
 * Meaningful Name: Indigo takes on that name because the color represents death and mourning in her homeland. The seeress Phereniq is instrumental to Augon Hunnamek's successes; her name is a derivative of Veronica (although she's decidedly not one) or Berenice, both of which mean "bringer of victory." The Brabazon family in Nocturne are all named after virtues...and while some of them live up to their names, the rather insufferable Modesty is a blatant subversion.
 * Mind Screw: Lots of them.
 * Non-Human Sidekick: Grimya again; she usually poses as Indigo's guard dog.
 * Our Demons Are Different
 * Our Werewolves Are Different
 * Redheaded Hero: Indigo. (She goes gray in Nemesis, but her hair gradually regains its color as the series progresses).
 * Red Herring: Infanta is the most blatant one.
 * Sealed Evil in a Can: What sets the entire story in motion.
 * Shallow Love Interest: Fenran (to Indigo) and Jessamin (to both Luk Copperguild and Augon Hunnamek).
 * Similarly Named Works: While there's some use of Elemental Powers in the series as a whole, that's not a plot point in Avatar, the seventh book. And there are certainly no blue aliens to be found, either. Nor was it written by Poul Anderson.
 * Star-Crossed Lovers: Indigo and Fenran. Also, Yima and Tiam in Avatar.
 * Talking Animal: Again, Grimya, who can also communicate telepathically with (at least) Indigo. She can also speak aloud, although it takes significant effort.
 * The Undead: The hushu in Avatar.
 * Unrequited Love: Infanta practically runs on it. Also seen in Nocturne, Troika, and Aisling.
 * Together in Death
 * Walking the Earth
 * Who Wants to Live Forever?: Indigo's immortality is presented as a curse.
 * Wife Husbandry: Augon Hunnamek's plan for Jessamin in Infanta.