Marisa and Jake haven't known each other long, but they seem perfect together. But as this happy couple look forward to life with a new baby, they are forced to take in a lodger and their world looks set to be torn apart.

But why does Kate prove such a threat to Marisa, and why does Jake seem unconcerned? Nothing seems to be quite as it appears. 

This is a clever idea translated into a gripping page-turner which also explores the themes of motherhood and jealousy, control and possession.