Sherlock is gone. Moriarty is not. And the world is running out of time.

Three years after Sherlock Holmes vanished beneath the roaring waters of Reichenbach Falls, the world has moved on. But one man hasn't: Dr. John Watson. Grieving. Hardened. Haunted.

When a killer emerges who leaves no clues, has no patterns, and feels no mercy, it will take a genius to stop them.

Enter Professor James Moriarty.

Moriarty offers a dangerous alliance to Holmes' oldest friend, but catching the killer is only the first act. Behind the horror lies a threat so vast it could bring down nations.

Teaming up with the sharp-minded Inspector Zenisha Lestrade, Watson is dragged into a cat-and-mouse chase across a world on the brink. But nothing is what it seems.

Not the murders.

Not Moriarty's plan.

And certainly not the truth about what really happened at Reichenbach.

Moriarty is a bold, pulse-pounding reinvention of the Holmes mythos, where the criminal mastermind becomes the only hope against a darkness too vast for heroes alone.

The world's greatest villain is back. And this time, he's trying to save it.