A Bitter Truth — Charles Todd

When battlefield nurse Bess Crawford returns from France for a well-earned Christmas leave, she finds a bruised and shivering woman huddled in the doorway of her London residence. The woman has nowhere to turn, and, propelled by a firm sense of duty, Bess takes her in. Once inside Bess's flat the woman reveals that a quarrel with her husband erupted into violence, yet she wants to go home -- if Bess will come with her to Sussex.

What Bess finds at Vixen Hill is a house of mourning. The woman's family has gathered for a memorial service for the elder son who has died of war wounds. Her husband, home on compassionate leave, is tense, tormented by jealousy and his own guilty conscience. Then, when a troubled house guest is found dead, Bess herself becomes a prime suspect in the case. This murder will lead her to a dangerous quest in war-torn France, an unexpected ally, and a startling revelation that puts her in jeopardy before a vicious killer can be exposed.