When all of the groom’s relatives asphyxiate at a wedding, the Fringe division investigates and quickly ascertain that a human agency is responsible. Walter realizes that the formula for the…

Carter’s romantic surprise for Allison turns deadly when they’re trapped in a sinking marine lab with time and oxygen quickly running out.

Sam and Dean investigate a case where the victims’ hands and feet have been severed and each have been branded with a strange symbol. While Sam does some research at…