A Scandal in Mayfair — Katharine Schellman

Sometimes danger lurks in plain sight, and in the cutthroat London Season socialite Lily Adler must race against time to catch a killer.

Fans of Bridgerton will delight in this Regency-era mystery featuring an intrepid sleuth, plenty of intrigue, and a touch of romance.

London, 1817. The London Season is beginning once more, and Lily Adler's return to her home on Half Moon Street feels different this year. No longer a recent widow, she has a life and friends waiting for her. Lily also has new responsibilities in the form of her protégée Amelia, the sister of her longtime friend Jack Hartley, who is escaping her own brush with scandal and murder.

It doesn't take long for Lily's growing reputation as a lady of quality who can discreetly find what is missing or solve what is puzzling to bring a desperate young woman to her doorstep. But helping her means unraveling a tangled web of family secrets. Soon, a missing will, a dead body and the threat of blackmail leave Lily facing danger every way she turns. 

The glittering society of Mayfair conceals many secrets, and the back alleys of London hide even more. Lily Adler will need to find the connection between them quickly if she wants to stop a killer before it's too late.