Each episode of “One Deadly Mistake” follows a homicide investigation where police work tirelessly against the clock to solve a complex case, until they discover an unlikely piece of evidence that exposes the identity of the killer.
Petty Officer Amanda Snell is found dead in her room on the base; NCIS is split as to whether her death was an accident or foul play; her killer's insatiable quest for his next victim brings the shocking truth to light.