Gillian is devastated when Celia inadvertently reveals a huge personal secret she has kept since she was fifteen. Alan and Gillian's already fractious relationship suffers as he distances himself from her further. Kate is made to feel awkward around Lawrence, who finds his mum's new relationship difficult to accept.

Celia reluctantly introduces Alan to her sister, Muriel. Caroline is stunned to learn that Kate is pregnant and receives a further blow from John when he comes with news. A drunk Gillian shares a dark, sinister secret with Caroline.