Supernatural (TV series)/Recap/S07/E12 Time After Time After Time

Season 7, Episode 12:

Time After Time
Dean and Sam are investigating a series of corpses found shriveled and mummified when Dean tackles the killer and... hitches a ride with him back to the 1940s. Dean adapts pretty quickly, and with the aid of Elliot Ness, sets about trying to find the monster. Back in the present, Sam teams up with Sheriff Mills to try and get Dean back.

Tropes

 * Dress Up Episode
 * Expy: the woman Ness goes to for advice is basically a female version of Bobby.
 * Greek Mythology: the Monster of the Week is Chronos, god of Time.
 * Monster Has A Girlfriend: he still gets killed, though.
 * Oh Crap: Chronos's prophecy.
 * Shout-Out: Dean can't help himself from quoting The Untouchables at every turn. Ness is not amused.
 * Time Travel