A brand-new, never-released novel from the USA TODAY bestselling Regency author!When a gentleman is found dead on a fishmonger's doorstep in Regency London, a rugged Bow Street Runner has to pair with the man's elegant noble nephew to solve the crime. They both find unexpected help—and infatuation—with the fishmonger's very unusual young widow.Individually, each has a reason for getting to the bottom of the mystery. And, as a trio, they find they are uniquely effective detectives with the ability to accomplish something few others can: solve a crime by scouring London, from its glorious heights of luxury to its rankest depths of depravity.