When her grandfather dies, Tamar inherits a box containing a series of clues and coded messages.

Out of the past, another Tamar emerges, a man involved in the terrifying world of resistance fighters in Nazi-occupied Holland half a century earlier.

His story is one of passionate love, jealousy and tragedy set against the daily fear and casual horror of the Second World War.

Unravelling it will transform the younger Tamar's life...