England: 1944.

When psychologist Maddie Gresham is sent a mysterious message telling her to report to Trent Park mansion, she wonders how she will be helping the war effort from a stately home.

Having signed the official secrets act, she soon finds captured Nazi generals are being detained at the house. Bugged with listening devices in every room, it’s up to Maddie to gain the Nazis’ trust and coax them into giving up information.

When Max Weitzler, a Jewish refugee, also arrives at Trent Park with the same mission, Maddie finds herself trapped in a dangerous game of chess.

The two met in Germany before the war, and Maddie’s heart was his from the moment they locked eyes. The hope that Max had escaped the Nazi threat was her guiding light in the darkness of war.

But Maddie has finally gained the trust of the Nazi officers at the house, and her love for Max must remain a secret.

As Hitler’s bombs destroy more and more English towns, it is up to Maddie to make one of the captured officers talk - at any cost.

But when there’s a shocking death at the mansion, Maddie realises that not everyone at Trent Park is on the same side.

When the walls have ears, who can you trust?

Based on the true events that took place at Trent Park during WWII, this is an emotionally gripping and heart-breaking novel about love, sacrifice and betrayal, perfect for fans of The Rose Code and The Lost Girls of Paris.