The Murder That Challenged a Cold-Blooded Strangler_s Alibi _ The New Detectives

A young woman is found strangled in her apartment. The prime suspect has a perfect alibi. He was at a family dinner, thirty miles away, with twelve witnesses who swear he never left the table. The evidence says he was at the crime scene. The witnesses say he was eating roast beef. One of them is lying.In this episode of The New Detectives, the groundbreaking Discovery Channel series that aired from 1996 to 2004 and inspired CSI: Crime Scene Investigation, forensic experts examine a case where a cold-blooded strangler's alibi was dismantled by a single piece of evidence. The suspect's phone had been left at the family dinner, pinging towers near the restaurant. But the suspect's smartwatch, synced to his phone via Bluetooth, told a different story. It showed a spike in heart rate and a change in GPS location at the exact time of the murder. The suspect had left his phone at dinner, driven thirty miles to the victim's apartment, killed her, and returned before anyone noticed he was gone. The smartwatch data was admitted as evidence. The jury deliberated for less than an hour.Turn down the lights, put on your headphones, and press play because the killer thought he was the smartest person in the room. His watch proved otherwise.