Relentless
2021| 1 season| IMDb 6.7
Relentless (2021) is currently available in the UK on discovery+ and Discovery+. Last updated 20 January 2026.
This six-part series follows filmmaker Christina Fontana’s search for a missing woman in Hannibal, Missouri. When she uncovers dark secrets of the town and the missing woman’s family, Fontana questions who she can trust and who might be hiding the truth.
Streaming info last checked: 20 Jan 2026