Hank believes a man he arrested seven years ago was telling the truth about a brutal monster he shot in self-defense. He enlists Nik and his Grimms o help.
Stefan finds it more difficult than he imagined to keep Klaus's secret.
A new inmate claims she is Anne Frank, and believes that Dr. Arden is a Nazi war criminal.
Dean is drawn to Missouri for a case that doesn’t initially sound like a case.
Gavin enlists the help of Dr. Evans to draw blood from Olivia to make sure her fainting spell was nothing more serious than too much alcohol.
A zombie surge leads to tragedy.
Dexter gets closer to Hannah as he is convinced she has more kills under her belt.
An uber-Grimm is hunting Wesen, and it is causing Nick to come apart at the seams (not literally.)
Losing his daughter twice in one lifetime sends Peter into a rage.
Klaus finally reveals what he knows of the Brotherhood of the Five.