The murder trial continues, with Costley's defence resting on evidence of an underlying personality disorder. But the prosecution barrister rips this theory apart and Costley's case seems to lie in tatters. Costley's back is up against the wall. Has he reached his tipping point? And if the court find out that Yvonne lied about their affair, will they believe anything else she's said?

A provocative thriller which sees an eminent scientist caught up in a damaging and compromising lie. Based on the novel by Louise Doughty.