The German Wife by Debbie Rix

Germany, 1939: Annaliese is trapped in a loveless marriage. Her husband Hans has become cold and secretive since starting a new job as a doctor at Dachau. Every morning she watches from her kitchen window as he leaves in his car. The sight of him in the dark uniform of the SS sends shivers of fear down her spine and she longs to escape…
When a tall, handsome Russian prisoner named Alexander is sent from Dachau to work in their garden, lonely Annaliese finds herself drawn to him as they tend to the plants together. In snatched moments and broken whispers, Alexander tells her the shocking truth about the camp. Horrified, Annaliese vows to do everything she can to save him.
But as they grow closer, their feelings for each other put their lives at risk. And Annaliese finds herself in grave danger when she dares to fight for love and freedom…
America, 1989: Turning the pages of the newspaper, Annaliese gasps when she recognizes the face of a man she thought she’d never see again. It makes her heart skip a beat as a rush of wartime memories come flooding back to her. As she reads on, she realizes the past is catching up with her. And she must confront a decades-old secret – or risk losing her only son…