Devastated by the horrific events of the previous night, Yvonne returns home. Desperately trying to come to terms with what's happened, she unexpectedly finds herself confiding in Costley.

When the situation intensifies, Yvonne becomes ever more terrified and once again turns again to Costley. He is calm, reassuring, authoritative.

They meet for one last time, and share a passionate afternoon together. However, when Costley takes control of the situation, Yvonne is plunged from one nightmare into another.

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?