It's early WWII. Rowland's daughter Margaret has graduated from college and has gone to Bletchley Park for secret war work. She brings her friend Pamela with her for Christmas to stay with the family. After they have gone back, Margaret is very anxious when Pamela disappears. When Rowlands goes to Bletchley Park, they search for some missing papers and find them in Margaret's locker. Shortly thereafter, Inspector Douglas asks Rowlands to come to his office. Margaret has been put in Holloway Prison for safety, and Rowlands finds himself once again helping Douglas solve a case, . They not only need to find who is the traitor giving information to the enemies, but also solve two murders. Not only Margaret, but also Rowlands is in danger.
This is an exciting and clever British mystery with a blind detective!
I thank Netgalley and Allyson & Busby for an ARC.