Mistresses 4×11 “Fight or Flight” – Despite April trying to win Marc back, he ends things between them for good, but there may be a surprise in store for them. Karen is furious when she finally discovers that Lydia was posing as her online and ends up firing her. Harry juggles two potential business opportunities, but it ends up backfiring. Meanwhile, Joss, along with her impact class friends, goes to find the man who killed their friend and teach him a lesson. After so much fighting, Joss finally tells Harry the truth about a past incident.