Cassie is the mother of 15-year-old twin daughters Olivia and Quinn, both played quite effectively by Grace Van Dien, who turns in an accomplished performance in which she's able to communicate by slight differences in intonation and posture which girl is which. Kim gives her call screener a nod and the screener hangs up on the woman in mid-call, but the woman later confronts her outside the studio where she's signing a few copies of her books for fans and turns out to be her sister Cassandra 'Cassie' Murphy (Jacy King).
Burgess can represent herself as an expert on 'families' when her own is wildly dysfunctional. Kim Burgess, a psychiatrist who hosts a local radio show in which she gives advice to various callers with 'issues.' One day during her broadcast she gets a call from a woman who claims she's just a fake and doesn't know anything at all about how people really tick, and screams about how Dr. 'The Bad Twin' (neither nor Lifetime's own publicity had the definite article in the title, but it's there in the opening title credit) stars Haylie Duff as Dr.
