A body's discovered. The murder investigation begins. But this is no ordinary mystery, but one set by crime writer Ian Rankin as eight ordinary members of the public compete to find the killer.

Join Jason and Mike as they try to solve the mystery in this six part series from Channel 4 - today we follow the final episode - To Catch A Killer.

If you like what you hear, give us a shout - we're @PresentsJAM on Twitter.