A Cruel Deception - (Bess Crawford Mysteries) by Charles Todd

Bess Crawford is on a mission to save a troubled officer from a mysterious killer in Paris after the Great War.

As always, Todd's intense feelings for the traumatized survivors of war make one mother's son the broken hero of an entire generation of lost souls.

With a personal mission from Matron at the London headquarters of The Queen Alexandra's, Bess must locate Lawrence Minton and unlock his past before he succumbs to addiction or suicide.

But what haunts him? Can she trust an officer in Minton's regiment with secrets of his own? Race against time to save the broken hero of an entire generation of lost souls.