This is the fourth episode of series two - just to keep you up to speed. For those who've managed to bypass this dark comedy, it's about Jackie Peyton, a no-nonsense emergency room nurse based in New York who has to balance her frenzied job with a complicated home life. She mainly does that through drug abuse. In this installment, Jackie, in the midst of dealing with Eddie's intrusion into her home life (she's married with kids, you see, but nobody knows that), recommends an alternative remedy for a cancer patient who isn't responding well to chemotherapy. Dr O'Hara covers for Zoe after she breaks the rules to save a young boy's life. For additional quality viewing, there's La Vie en Rose and Polansky's Repulsion follow on BBC2 at 11.50pm and 2.00am respectively.