When Victorian London is struck by a trio of unexpected deaths and suspicion falls on her sister and her father, Charlotte Holmes is desperate to find the true culprits and clear the family name.
When the wife of her friend and benefactor asks for her help tracking down a missing former love, Charlotte Holmes is shocked to learn that the man in question is her own illegitimate half-brother, Myron Finch.
After the estranged wife of Lord Ingram is found murdered on his estate and he becomes the main suspect, Charlotte Holmes, Lady Sherlock, a friend of the lord, adopts a disguise to find the killer.