Devoted mistress, grieving widow, dissatisfied wife, wanton seductress – Mistresses is the story of four friends who experience love and infidelity in very different ways.
Katie, a GP, finds her well-ordered existence thrown into disarray when her married lover dies and his son reveals a determination to trace the other woman in his father's life.
Trudi, a 9/11 widow, receives a cheque for $2m and an offer of a date on the same day but struggles to leave the past behind.
Successful lawyer Siobhan is happily married but is finding it hard to deal with the fact that making love has been supplanted by making babies – particularly when her flirtatious colleague Dominic sets his sights on her.
Fun-loving minx Jessica is the archetypal mistress. A true believer in the joys of no-strings-attached sex, she claims there is no such thing as love. That is, until she falls for another woman who is about to get married. (Source: BBC Press Office)
Trudi, Jessica, Katie and Siobhan find themselves united in their grief following the death of a somebody they were all close to. Grief turns to anger at the funeral though as there are many unanswered questions. The friends don't speak for a couple of months but a heartbreaking announcement ends up bringing them back together. Siobhan becomes confused about her feelings for her new boyfriend, Jeff. Trudi is in a panic after Amy disappears.