Learn more about teacher Simeonette Mapes Crupi's shocking 2012 death and the suspect at the center of the investigation.

Learn more about the tragic crash that killed Jamar Champ, husband of Love & Hip Hop: Hollywood star Masika Kalysha.

Learn what the evidence revealed about Nelllie Hocutt's brutal 2003 murder in a preview for The Death Investigator with ...

Convicted kidnapper George Legere was found unresponsive in his jail cell weeks after being charged in Janet Couture’s 1973 ...

Find out more about the allegations against Keon King, who has been charged with murder in the death of Kada Scott.

Find out how Las Vegas detectives solved the homicide case of a widowed mother who was found beaten and strangled and dumped ...

Find out new details about an infamous series killer and his homicidal calling card in the new Oxygen documentary The Boston ...

Kelly Siegler sits down with local investigators to find out what happened to Tracy Holloway.

Trying to piece together the events that led to Tracy Holloway's death, Kelly Siegler and Steve Spingola reenact the violent ...

Oxygen uncovers shocking new details about one of the most chilling cases in American history with “The Boston Strangler: ...

Casey Sherman speaks about the importance of doing real-world research and investigation on the Boston Strangler.

Barbara Butcher speaks about the way she and her team pieced together a string of events from a few telling pieces of ...