Serena faces her demons and comes to a heart-wrenching conclusion, Zosia takes action when Issac reveals his true colours, and Mo risks her professional reputation.
This series is a spin-off from the long running BBC medical drama Casualty. Set in the same hospital as its sister series, this show follows the everyday lives, professional and personal, of the doctors, nurses and patients who find themselves, for various reasons, in the wards of Holby City General Hospital