Book #18: Dead Wake: The Last Crossing of the Lusitania, Erik Larson
Within hours of arriving in Liverpool, a single torpedo was launched from German U20 aimed at the Lusitania. The sinking of the Lusitania was credited as one of the key factors that got America involved in WW1. In this book Erik Larson masterfully weaves the the details aboard U20, the Lusitania and on land together into a tapestry that brings you back to May 7, 1915. It is a must read.