Had to go to really dark places: Peters on playing serial killer Dahmer

Actor Evan Peters said he went to "really dark" places and stayed there for an extended period of time while portraying serial killer Jeffrey Dahmer in 'Monster: The Jeffrey Dahmer Story'. "We had one rule going into this...that it would never be told from Dahmer's point of view," added Peters. Peters was earlier seen in TV series 'American Horror Story'.