It started as a promising business partnership. But when Robert Dahl asked for $800,000 in cash, Emad showed up with a red duffle bag full of money—a decision that would change everything. Watch “The Tech Bro Murders” Tuesday on ID. #TheTechBroMurders | Investigation Discovery

A cryptic note led investigators deep into the woods, where they uncovered a hidden ammunition box filled with disturbing letters and a haunting tape. Glenn Milner’s dark plan was only beginning to unfold. Watch “The Friday the 13th Murders” Wednesday on ID and stream on @HBOMax | Investigation Discovery

When Keith Green met Tiffany Li, he entered a world where tech money creates lives beyond most people's wildest dreams. Watch "The Tech Bro Murders" Tuesday on ID. | Investigation Discovery

22K views · 356 reactions | Exclusive home video & diary entries reveal an even darker truth. Stream O.J. & Nicole: An American Tragedy FREE on ID GO. | Investigation Discovery | Facebook

255K views · 978 reactions | TONIGHT: She lost interest. He lost his mind. Katie’s stalker seeks revenge in the all new series Home Alone tonight 10/9c on Investigation Discovery. | Investigation Discovery | Facebook

12K views · 152 reactions | Looking for more true crime? Watch hours of original investigations into headline cases, including O.J. Simpson, JonBenet Ramsey, and much more with ID GO. | Investigation Discovery | Facebook

20K views · 161 reactions | A father's desperate search for his pregnant daughter leads him to an abandoned cabin in rural Canada. When police come in to investigate, a crucial surprise witness helps expose unspeakable crimes. Tune into #CabinInTheWoods, Mondays at 9/8c on ID. | Investigation Discovery | Facebook

785K views · 8.1K reactions | This goes to show you can't always believe what you see… Join us tonight at 9/8c for “Crimes Gone Viral” on ID | Investigation Discovery | Facebook

77K views · 655 reactions | This is a nightmare for anyone who lives alone... Join us tonight at 9/8c for “Crimes Gone Viral” on ID | Investigation Discovery | Facebook