Mistresses - Season 4 (2016)

Karen starts working with her clients again, putting her love life on hold; April's client starts to get much closer to her; Someone from Marc's past returns; Kate finds out her ex-fiancé is in a new relationship.

Karen's new book proposals don't satisfy her agent; April is forced to make a tough decision with her job after Michael kisses her; Joss and Harry have trouble with their new working relationship.

Someone returns to Karen's life and creates ripples; April and Marc disagree about parenting styles; Kate's new man has an unexpected connection to the family; Joss snaps right before their impromptu wedding in Vegas.

Alec threatens for full custody of Vivian; April and Marc find a condom in Lucy's jacket; Joss' actions put Jonathan's nephew in the hospital, causing tension in her relationship with Harry.

Marjorie convinces April to extend her stay after discovering she needs a liver transplant; Karen feels uneasy about her new nanny, Lydia, but still attempts to bond with her.

April's mom extends her visit, causing friction with her and Marc; Lydia (Karen's nanny) creates an online dating profile using Karen's picture. Kate moves out of Harry and Joss's house, and Joss starts taking pills.

Karen and Adam take their relationship to the next level; Joss continues to unravel as she copes with the loss of a friend; Harry finds out about the pills Joss is taking; Marc picks his things up from the house; April finally confronts her mother.

Marc ends things with April for good; Karen is furious to learn Lydia was posing as her online; Harry juggles two potential business opportunities, which backfires; Joss, and her impact class friends, goes to find the man who killed their friend.

April is unsure how to announce her big news to Marc just as his career is taking off. Karen reaches a relationship milestone when she meets Adam's parents. But her relationship is put in jeopardy when the Lydia situation resurfaces. Kate's anger at Joss shows no signs of subsiding, until she learns the truth.

Everybody reunites for a funeral. The episode jumps ahead one year, when Harry and Jos open the bistro and someone new comes to town.

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