Viewers should be prepared to question everything in Oxygen’s new series “Kill or Be Killed.” These complex cases unpack brutal murders where the killer claims self-defense. Was it really the result of a genuine act of self-preservation, with no other alternative, or was the killer desperately trying to cover-up a cold-blooded murder?  “Kill or Be Killed” is the gripping exploration of self-defense murder cases, where law enforcement, prosecutors and defense attorneys unravel every detail, from the harrowing stories, forensics, interrogations and witness statements that led up to the gruesome event in order to find answers. Through the investigation and sparring of dynamic legal teams, every episode provides an immersive journey, exploring both sides of the story, building to confounding verdicts of guilt or innocence in the eyes of the law. The series also exposes the suspenseful journey loved ones of both the slain and the perpetrators take as they navigate the twists and turns of the investigation and are forced to grapple with the truth.