A Murderer Was Caught Because Of A Made-For-TV Movie
In 1985, Ellen Sherman was found dead in her Connecticut home. Police, believing an intruder had strangled her earlier in the day, ruled out her husband Ed as a suspect. Ed had left for a fishing trip the day before, had been with friends the day of, and had been overheard speaking to Ellen on the phone at his buddy's house the previous night, all of which gave them a pretty solid timeline. The case then sat around for five years. An investigation unveiled some details about marital troubles, but nothing concrete. Then, in 1990, a daughter of one of Ed's friends remarked that she had been on the phone line when Ed was speaking to Ellen, and had only heard Ed saying "I love you" into a ringing phone, with no one ever answering.
OK, maybe it was just a kid misremembering something that happened years before. But then someone else recalled that on the Saturday of his trip, Ed had been talking about a TV movie called Blackout, which aired a few days earlier. Blackout was a by-the-numbers HBO potboiler that featured a man killing his wife, then using an air conditioner to slow her body's decomposition. This causes the police to misjudge the time of death as two days later than it really was ... at least, until they catch on and apprehend him.
HBOIt was a psychological thriller, not the gimp cutlery demonstration that the poster suggests.