Edward Carnby, the supernatural detective is back! And this time it's for revenge. Carnby's best friend, Charles Fiske has been found dead off a mysterious island near the coast of Maine, Shadow Island.

Carnby's investigation quickly leads him to Fred Johnson who informs him of Fiske's search for the three ancient tablets which have the ability to unlock an incredible and dangerous power. Johnson pleads with Carnby to take the place of Fiske and reopen the investigation in order to recover the tablets. Carnby accepts the mission as his life's goal to find and destroy the murderer of Fiske and avenge his death.

From his first steps on Shadow Island in the cold night of winter, Carnby is immediately confronted by mysterious and evil creatures which seem utterly determined to stop his progress. Few remaining people on the island cross Carnby's path. Fear lurks around every corner, within every shadow. Encompassing the island rests a somber mansion filled with endless traps and deep shadows. Each and every shadow could hide the deepest secret, or the worst nightmare.