The family finds out Ana's been keeping secrets from them. Margene gets upsetting news about her estranged mother. Nicki, working at the DA's office, finds out the identity of the last witness against Roman. Barb's sister is back in town and her actions might put Bill's casino plans in jeopardy. Sarah changes her mind about the senior prom and takes Heather, Ben, and Franky with her -- upsetting Rhonda.