Strangers on a Train (S04E04)

Against her better judgment, Fiona continues her secret affair with Robbie. But the situation nearly boils over when Mike shows up at Robbie's apartment while Fiona's inside. Frank, in increasingly dire health straits due to liver disease, attempts to contrive an "accident" that will provide an ample insurance payout to cover the cost of a potential transplant. (Showtime)