Tracing a former family friend, who is recently murdered, Holmes begins to piece together events through his patchy childhood memories and figures out that Violet was not, contrary to his brother Mycroft's assertion, suffering from tuberculosis but was in fact stricken with severe mental distress following the death of her husband Siger.

After Sherlock unlocks his mother's private museum of debunked, bizarre artifacts, he recalls an incident whereby Otto Richter was harshly berated by Mycroft, who later appeared to have testified against the doctor on grounds of the latter's medical malpractice.

During the investigation of a murder in a masked ball at the mansion of a prominent member of the island community, Holmes encounters an elderly police officer, who provides Sherlock with the missing information to conclude his quest.

The player's choice of reasoning determines the ending; if the conclusion is that Sherlock (with the unwitting prompting of Jon) had tampered with Violet's medication, she is shown to have suffered an allergic reaction, dying despite Otto Richter's attempted tracheotomy.

Despite Holmes' explicit animosity to him, Vogel claims that by spurring him on to confront his past, he has turned Sherlock from a Sisyphus to an Ozymandias, allowing him to cast aside his fixations and setting him out unto the world.

[6][8][7] Reviewers praised it for its intriguing, engaging detective gameplay while criticizing its lack of polish, dull open world and inability to tackle social issues with grace.

Push Square awarded the game six stars out of ten, praising the Sherlock Holmes mechanics while criticizing the open world as dull and frame rate with other technical problems.

The game follows the particular detective and his partner Dr. Watson investigating mysterious kidnappings and blood sacrifices going on which connects to a supernatural cult that worships a eldritch deity related to Lovecraftian horror, but these travels may also lead Sherlock into a path of madness.