Investigation Discovery continues its heritage of providing in-depth  compelling documentaries & shows.

Investigation Discovery

DNA evidence can identify a killer; Sheila investigates a train crash.

Secrets, Lies & Private Eyes

The Informant and the Train

A call shifts the focus in the murder case; Heather hunts a fugitive.

The Bullet and the Bounty

Heather hunts a fugitive; Renee and Amy think they found a body.

The Secret and the Missing

Alex and Jon hunt an alleged stalker; Renee and Amy tackle a cold case.

The Watcher and the Horseman

Heather's homicide gains pace; Sheila hunts a mysterious "medicine man."

The Killer and the Cure

A man charged with murder hires Heather; Renee hunts a suspected cheater.

The Accused and the Lover

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Four female-led private investigation agencies open their doors to the inner workings of their cases; missing persons, infidelities, cold cases and fraud fill their notebooks.

S1 E3 | The Watcher and the Horseman