The Perfect Murder

Takes a deep dive into the stories of unforgettable murders from the streets of Philadelphia. Told through the eyes of veteran homicide detectives, local reporters and the victim's families who have lost so much, these are the cases they will never forget.

Victims' rights activist John Walsh and his son, Callahan, showcase time-sensitive, unsolved cases in desperate need of attention, mobilizing the public to engage in the pursuit of justice.

Looking into several heinous crimes done by unexpected people. As identities are revealed, a chain is completed - uncovering a grim series of interconnected crimes and a trail of suffering in their wake that haunts communities and loved ones for decades.

Investigation Discovery joins forces with reporters from People magazine to tell stories of high-end fashion icons and their couture crimes that captured headlines. The adage"if looks could kill" takes on entirely unique meaning in the series, which grants People's journalists exclusive access beyond the catwalk to reveal that fashion can sometimes be fatal. The hourlong tales of depravity, obsession, and family betrayal in the fashion world all have a common thread -- cold-blooded murder.

An examination of BTK's crimes and the decades long investigation required to apprehend him. This series explores the impact his actions had, especially on his family. His daughter speaks about the challenges of being the daughter of a serial killer.

True-crime stories are explored.