
Drama series about four female friends' marital and extramarital relationships.

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.

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.

Jessica is jealous of Alex's show of love for Lisa at their wedding and ends up sleeping with a wedding guest. Meanwhile, Katie attempts to suppress her feelings for Sam by hooking up with a man in a bar, and Trudi panics about her body when Richard comes over for a romantic evening - and resorts to a body wrap that goes horrible wrong.

Despite Trudi's disapproval, Katie throws herself into an affair with Sam. Trudi labels Sally a fraudster after she claims to be Paul's mistress. Meanwhile, Richard attempts to charm Trudi into the bedroom, but their relationship takes a turn for the worse. Having accepted his infertility, Hari arranges to see a specialist, and Katie finally confesses to Sam about her relationship with his father.

Siobhan struggles with her secret, and convinces her boss to promote Dominic to another branch. Katie desperately tries to contact Sam, only for him to turn up in the middle of the night asking searching questions. Meanwhile, Trudi attempts to persuade Richard she doesn't want to break up, and contemplates giving Sally a share of her windfall.

Trudi's shocking discovery leaves her reeling. Siobhan faces a devastating dilemma - have an abortion, or lose Hari forever. Meanwhile, Jessica is torn between her feelings for Alex and what's right for them both, and Katie is called to a panel hearing about John's death.

Katie, Trudi, Siobhan and Jessica have moved on from their troubled love lives, but when Katie's new boss turns out to be an old flame, could trouble be looming?

Siobhan is shocked to discover that her new client at work is Tom, the man she had a secret liaison with, and that he is determined to continue their affair.

A concerned Trudi confronts Richard about his financial secrets, Katie throws herself into her relationship with Dan, and Jessica pays Mark a visit at work.

Jessica and Mark receive an unwelcome visitor, Trudi wonders if she can trust Richard again, Jack takes Kate down memory lane, and Siobhan tries to fix her marriage.

Jessica and Mark try their hand at exclusivity, but Mark finds it hard to adjust. Meanwhile, Trudi throws herself into her cake-baking business, and finds comfort in Lucas.

Katie is placed in an awkward position over her affair with Jack, Trudi finds it hard to get Richard out of her system, and Siobhan struggles to escape Tom's grip.

Two years have passed and the bond between Katie, Trudi, Jessica and Siobhan has been shattered. What could have happened?

Visiting the house she grew up in, Katie unearths a disturbing secret that threatens to destroy her fond childhood memories.

The plot thickens, as a betrayal has far-reaching consequences. Trudi confides in Katie, while Siobhan goes on a date.

Tense conclusion to the drama about four female friends. Trudi, Jessica, Katie and Siobhan are united in grief after the death of a loved one, but emotions run high at the funeral.
Complete episode guide for Mistresses with detailed information about every season and episode including air dates, summaries, ratings, and streaming availability in United States.
This episode guide is organized by seasons, making it easy to track your viewing progress or find specific episodes. Use the episode information to plan your binge-watching sessions or catch up on missed episodes.