Adapted by Ben Chanan (Cyberbully, The Capture) Then You Run follows a close-knit group of rebellious London teenagers on a getaway in Rotterdam - but after the estranged father of Tara (Leah McNamara) is discovered dead, they find themselves on the run across Europe with three kilos of heroin and a host of deadly criminals snapping at their heels. Leading the hunt against Tara and her childhood friends - reckless Stink (Vivian Oparah) sharp Ruth (Yasmin Monet Prince) and loyal Nessi (Isidora Fairhurst) - is Tara's uncle Reagan (Richard Coyle) a notorious gangster haunted by his past who will stop at nothing to track down his missing cache of drugs. But Reagan isn't the only person they should fear - because all the while a terrifying and mythical serial killer known only as 'The Traveller' draws closer on a collision course with them all.