“911: Did the Killer Call?” season one, episode five, airs at 10 p.m. Tuesday, Aug. 12, on Investigation Discovery.

LIVE STREAM: Fans can watch Investigation Discovery without cable on Philo, which offers a seven-day free trial; and DirecTV, which has a five-day free trial.

The episode is called “Suspect on the Line.”

The synopsis is, “After a man’s savage murder at home, his wife is in the frame after calling 911, but the truth is more macabre than anyone dared believe; a husband finds his wife with shots to the head.”

In this new series, ID explores cases in which the killer was the person who called 911.

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