If you’re looking for a new true crime show to watch, look no further. Mark of a Killer digs deep into murderers’ crimes by using their postmortem signature. Detectives involved in the cases also interview with criminal psychology experts and family members of the victims, so yeah, you’re going to want to watch. Mark of a Killer premieres on Oxygen on January 20 at 7 p.m. ET. Watch a snippet of the first episode below, which focuses on the infamous Gainesville Ripper, Danny Rolling.

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