The Sycamore Gap Mystery (2025) is a Documentary, Crime series that follows when the beloved 200-year-old Sycamore Gap tree on Hadrian’s Wall is mysteriously felled overnight, public outrage erupts worldwide. This gripping two-part true-crime documentary follows Northumbria Police’s unprecedented investigation, with exclusive access to detectives, witnesses and never-before-seen evidence. As officers untangle a bizarre case with no CCTV and no witnesses, the series explores the cultural impact of the tree’s loss and the global fight for justice in one of the UK’s most unusual environmental crimes. The Sycamore Gap Mystery is not currently listed with streaming providers in your selected region, but availability can change over time. It has a user rating of 6.5 out of 10 from 2 votes. Fans of documentary series may also want to explore similar titles below.