Gravely injured, Frostpaw places her trust in a young warrior, convincing him to protect her as she follows StarClan's cryptic directions toward the roots of RiverClan, where she hopes to find the answers she so desperately seeks while staving off a war between the clans.

" "You are to report to Station X at Bletchley Park, Buckinghamshire, in four days time ... That is all you need to know." This was the terse telegram hundreds of young women throughout the British Isles received in the spring of 1941, as World War II raged. As they arrived at Station X, a sprawling mansion in a state of disrepair surrounded by Spartan-looking huts with little chimneys coughing out thick smoke-these young people had no idea what kind...