Moving in with your oldest friends…What can possibly go wrong?The latest gripping domestic drama from the author of The Move and The People at Number 9.Harriet and Mark have played it safe, shrewd investments, smart property moves which have led them to a neat terrace in an up-and-coming area of Balham. And if it’s not quite as smart as they’d like, they’re working on it.Old friends Yvette and Rob have had a different kind of life. Married young when Yvette fell pregnant, no