The Devil At Prayers: An Untold Sherlock Holmes Adventure

Emily Watson lives in a quaint English manor house with her twin sister, confined to a 20-mile radius around the estate for reasons she has never known. When the mysterious Professor Moriarty comes to visit and her sister goes missing, she discovers she is the half-sister of Dr. John Watson.

Traveling to London to meet him, she finds that he is the biographer and flatmate of famed consulting detective Sherlock Holmes, in whom Professor Moriarty has expressed a sinister interest.

Soon after he...