Day Off

 was the fourth episode of Series 4 and the 44th episode overall.

Plot
In the Kings Arm pub, Jimmy Powell finds the pub comedian, Arthur Drury, stabbed in the toilets. He needs a chest drain. Two policeman suspect Jimmy, until they find evidence the killer is a deranged young man, who came in earlier with slashed wrists, but fled. His flat mate is also brought in, after being attacked by him, his skull has caved in and he dies. Alex gives a patient a painkiller before a doctor sees him. Duffy snaps at her. She has just found out she's pregnant. Andrew is discussing his new post and Duffy tells him she will have the baby on her own and doesn't love him.