Martin is desperate (not just generally, although that's obviously still the case). He's worried that he hasn't got anything to wear to Caroline's housewarming party.

It's a testing time for everyone: Joanna and Harriet are each convinced they're pregnant, Martin sits his exams for the hundredth time, and Mac surreptitiously attends an interview for a promotion

Caroline is broody, but she's confused. Is Guy the good guy or the bad guy? Is Mac the good Mac or the bad Mac? Martin gets his exam results.