There are few things better in summer than a good blockbuster beach read. You know the sort of thing: you zip through it in an hour, it's frothy, fun and you don't really have to think about it at all. Monday, Monday (ITV, 9pm) is a bit like that: it's chick lit TV. Sorry, gentlemen: you're going to loathe it, possibly as much as Mistresses. There's the PA, who secretly does al...