Death at the Diogenes Club (Sherlock Holmes and Lucy James Mystery #5)

At London's most exclusive club,  Sherlock and Lucy must solve a mysterious locked-room murder.  Lucy is still coping with the traumatic after-effects of their last case, and her romantic relationship with Jack, her handsome young police detective friend, is not going well. But she is as feisty and determined as ever, even when the Baker Street team confronts the most ruthless gang leader in London. 
Fans love this popular new series! T he Sherlock and Lucy series is recommended by the library of clean reads.