An Unwanted Guest Lapena Shari *** The new page-turner from the author of the phenomenal bestsellers, THE COUPLE NEXT DOOR, and A STRANGER IN THE HOUSE. 'An excellent mystery! Agatha Christie meets P D James' Ragnar Jonasson 'Tense. Unpredictable. Unputdownable. Shari Lapena's novels are domestic noir at its finest' Simon Kernick...