On May 11, 1942, a German U-boat torpedoed SS Nicoya, violently ending a peace in Canada's waters that stretched back to 1812. By the end of 1944, another 18 merchant ships and four Canadian warships would be destroyed. More than 300 men, women and children—including at least 260 Canadians—died by explosion, fire or icy drowning.

Drawing on numerous first-hand accounts from both Canadians and Germans, respected writer and historian Nathan Greenfield has penned a lively, revealing narrative, the first popular account of World War II in Canadian waters. This is a must-read for military history enthusiasts, veterans and their families.