Welcome to number 24, a Georgian villa in west London that is home to five separate families and five very different lives. Up in the eaves, Sarah finds that recovering from a nasty divorce is even more heartbreaking when your ex-husband lives one floor beneath you with his new wife. Their happiness floats up through the floorboards, taunting her. A child psychologist, Sarah has picked up great sadness from the little girl, Una, who lives with her careworn mother three floors below, but is Sarah emotionally equipped to reach out? The Spring brings a new couple to number 24. Jane and Tom's zest for life revives the flagging house, and Sarah can't deny the instant attraction to handsome Tom. Having seen at first hand what infidelity does to people, she'll never act on it ...but the air fizzes with potential. The sunshine doesn't reach every corner of number 24, however. Elderly Mavis, tucked away in the basement, has kept the world at bay for decades. She's about to find out that she can't hide forever. Love, rivalry, secrets and murder - all under one seemingly ordinary roof