A nightclub singer with more than one secret hastily leaves London on The Queen Mary after her best friend's husband is murdered...only to discover that death has followed her onboard, in this thrilling locked-room mystery.

London, 1936. Lena Aldridge is wondering if life has passed her by. The dazzling theatre career she hoped for hasn’t worked out. Instead, she’s stuck singing in a sticky-floored basement club in Soho, and her married lover has just dumped her.

But Lena has always had a complicated life, one shrouded in mystery as a mixed-race girl passing for white in a city unforgiving of her true racial heritage. She has nothing to look forward to—until a stranger offers her the chance of a lifetime: a starring role on Broadway and a first-class ticket on the Queen Mary bound for New York.

After a murder at the club, the timing couldn’t be better, and Lena jumps at the chance to escape England. But when a fellow passenger is killed in a strikingly familiar way, Lena realizes that her greatest performance won't be for an audience, but for her life.