Upcoming episodes, programme details and where to watch over the next seven days. All times are UK time.
The disappearance of a local lawyer paralyses a mountain town in Colorado. Soon clues emerge that the community's idyllic veneer is not all it seems. S1/Ep4
Billy disappears just after finding out his girlfriend is cheating on him. Is she behind it, or will a perpetrator emerge from beyond the grave? S1/Ep5
A young woman on the brink of starting her dream job disappears, and it's down to forensic officers to gather the clues that may lead to her whereabouts. S1/Ep8
When Amy disappears, police have a suspect but no crime scene, no body and no evidence. It takes an unexpected informant to blow the case wide open. S1/Ep11
A basketball star and his girlfriend disappear while sailing. Can investigators track down his brother, who's the only person who may know what happened? S1/Ep12