 There s always a sinking feeling you get when you see an expectant couple walk into the South Central labour ward full of hope, and you know they re going to end up with him pale as a sheet and her looking like an extra in a slasher movie. But there are surprises tonight. The gore factor is slightly lower than usual; Rob gallantly offers Maya some advice about hospital romances; Polly gets a kick in the teeth from the drug company man; and Chrissy worries about Whitman s manner with female medical students. What s the surprise there? Ah, he has a magnificent ace up his sleeve.