Life has been tough for Rosie Frost, jilted on her wedding day at only seventeen, not realising she was pregnant. Six years later in the throes of the Second World War, things are just beginning to look up when she is recruited as a Wren, passing her tests with flying colours. But when they discover her illegitimate child, she’s unceremoniously thrown out…

Thankfully, Rosie has been recognised for her brain by top secret war office Bletchley Park, where they care little for her personal life…Excelling at her job once more, Rosie settles into life at the Park, throwing her energy into deciphering Italian naval signals.

But when she spots a familiar face from the past, her world threatens to come crashing down once more. Can Rosie get over her heartbreak and put the drama behind her, or will she let it ruin everything she’s worked so hard to achieve…?