Follows the lives of four female friends and their involvement in an array of marital and extramarital relationships.
Episode 1
Katie keeps her affair with a patient secret. Lawyer Siobhan is tired of trying to become pregnant by her husband, and is instead interested in a work colleague.
Episode 2
A guilt-ridden Siobhan confides in Jessica. Trudi and Richard go on an uncomfortable date, whilst Katie grows closer to Sam. Jessica discovers feelings for lesbian bride Alex.
Episode 3
Jessica is jealous of Alex's show of love for Lisa at their wedding and sleeps with a wedding guest.
Episode 4
Despite Trudi's disapproval, Katie throws herself into an affair with Sam.
Episode 5
Siobhan struggles with her secret, and convinces her boss to promote Dominic to another branch.
Episode 6
Trudi's shocking discovery leaves her reeling, and Siobhan faces a devastating dilemma.
