With a documentary crew films an in-depth look at neurosurgery at Holby, Guy is struggling with his inner demons. In the pursuit of success, he puts his friend in danger.
Essie's obsession with checking diary dates is explained when she takes a pregnancy test. But before she can digest the result, she becomes involved in the complex case of an adopted man who wants to donate one of his kidneys to his birth mother.
Arthur is alarmed when Morven suggests that they keep their new relationship secret at work, and reluctantly agrees. But is he good at keeping secrets?