Watch Adventure Time with Finn and Jake Season 2 episode 19 Mystery Train s2e19

Finn, the human boy with the awesome hat, and Jake, the wise dog, are close friends and partners in strange adventures in the land of Ooo. The 30-minute series is from Cartoon Network Studios, created by Pendleton Ward and executive produced by Fred Siebert and Derek Drymon.

45: 2×19 — Mystery Train (Mar/14/2011)
Adventure Time with Finn and Jake season 2 episode 19