The Breakthrough
When a shocking double homicide goes unsolved for 16 years, a detective teams up with a genealogist to catch the killer before it becomes a cold case.

Season 1 · Episode 4 ·
A Lonely Person
With everyone nearing the ends of their ropes, a revelation from an unexpected source leads to a breakthrough in the case.
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Episode 4 of season 1 of The Breakthrough: “A Lonely Person”. Aired 2025-01-07. Watch it online free on ZapFlix.