Parties, bad boys and speakeasies - life in Manhattan has become a woozy blur for Clara Knowles, Lorraine Dyer and Gloria Carmody. But all of that is about to change when their best friend, Marcus Eastman, gets engaged.

But the betrothed is not who she appears to be, and uncovering her lies - and stopping the wedding - leads the girls into adventures every bit as scandalous and heady as those in the first two novels.