Season 1
2026 · 2 episodes · 1h 32m in all
When Gary Allen is acquitted of murdering Samantha Class in 2000, detectives know it's only a matter of time before he strikes again. In 2019, the murder of another woman, Alena Grlakova, leads detectives once again to Gary Allen, unearthing chilling evidence which changes the course of the investigation and entwines Alena and Samantha's cases forever. Can he finally be brought to justice?

Episodes
- 1
1. Episode 1
22 Feb 2026 · 46 min
When Gary Allen is acquitted of murdering Samantha Class in 2000, detectives know it's only a matter of time before he strikes again. In 2019, the murder of another woman, Alena Grlakova, leads detectives once again to Gary Allen, unearthing chilling evidence which changes the course of the investigation and entwines Alena and Samantha's cases forever. Can he finally be brought to justice?
- 2
2. Episode 2
1 Mar 2026 · 46 min
When Gary Allen is acquitted of murdering Samantha Class in 2000, detectives know it's only a matter of time before he strikes again. In 2019, the murder of another woman, Alena Grlakova, leads detectives once again to Gary Allen, unearthing chilling evidence which changes the course of the investigation and entwines Alena and Samantha's cases forever. Can he finally be brought to justice?
Chasing a Killer: Gary Allen Season 1: quick answers
How many episodes are in Chasing a Killer: Gary Allen Season 1?
Season 1 of Chasing a Killer: Gary Allen has 2 episodes, about 2 hours in total.
When did Chasing a Killer: Gary Allen Season 1 come out?
Season 1 premiered on 22 Feb 2026.