It's the last and final episode of Chris Chibnall's crime drama set in a Dorset seaside town tonight, and the conclusion is set to be filled with a multitude of twist and turns, countless red herrings and numerous suspects with shaky alibis. However, the truth will finally be revealed as detectives Alec Hardy and Ellie Miller (David Tennant and Olivia Colman) finally untangle the web of deceit surrounding the rape of Trish Winterman (Julie Hesmondhalgh).