Two Men Missing — John Creasey

British detective Patrick Dawlish must find two men who can turn the tide of World War II in this breathtaking mystery from the author of Death in Flames.
 
After solving several sensational cases -- and building a stellar reputation -- it's become clear to Intelligence Officer Patrick Dawlish that he doesn't have to look for trouble for it to find him. Enter Amelia Shortt, the attractive and cunning daughter of a brilliant doctor who's making strides in helping World War II survivors with shell shock. Amelia thinks she's convinced Dawlish that someone is blackmailing her father, but Dawlish can't be manipulated that easily . . .
 
He decides to play her game, but when she disappears, her father is kidnapped, and a murdered servant is left in their wake, Dawlish soon realizes he's being drawn into a case with the highest of stakes. One of the doctor's patients holds national security secrets in his shattered mind -- and Dawlish finds himself in a deadly race against England's enemies to find him . . .