Duffy's been promoted to Sister and clashes with Dr Mary Thominson. Charlie's called on to help a group of pot-holers and has to go down into the ground to help one of them. Back at Holby, Kuba is wrongly accused of theft and Susie's furious when her photos are circulated around the department. It's Andy's last day and the staff gather together to wish him well and Ewart demands tighter security.