Paul Collier is in practice with elderly Dr. Neilson and asks Michael to cover his night surgery so he can go on a date. After being importuned by Liz, the receptionist, Michael goes to the police station to see a drunk driver - Paul, who has given his, Michael's, name. Michael saves the situation by giving the police doctor a sample of his own, alcohol-free blood. On return to the surgery Paul catches a drunken Neilson at it with Liz and blackmails him into giving him a good reference to get out.
—don @ minifie-1