Zach Friedrich’s family has been rocked to its very core by an incident that happened before he was even born and worse still, his dad is to blame. One of the best openings I have read in a long time, the first half, seen through the eyes of Zach’s father, a psychologist who believes he has created a pill for happiness, is engaging and absorbing. The second – Zach’s story – is a more conventional family saga. The whole is a compelling read.