Trained to be a detective by his father, blessed with astounding powers of observation and deduction, and cursed with a refusal to take anything seriously, Shawn Spencer has convinced everyone he's psychic. Now, with his best friend, Gus, he's either going to clean up...or be found out.

When the Santa Barbara art museum unveils its newest acquisition, the long-lost masterpiece by Pre-Raphaelite painter Dante Gabriel Rossetti isn't the only surprise behind the red curtain - the museum's curator is there too. Dead. And posed just like the figure in the painting.

The case has everything Shawn lines - it's bizarre, it's baffling, and there's a snack bar at the crime scene. But the investigation gets a lot less fun as Gus and he begin to realize that the clues are leading them toward a centuries-old cabal desperate to hide a terrible secret - and more than willing to kill the two detectives who are trying to reveal it. Shawn and Gus need to unmask a secret society as old as the Templars, as mysterious as the Rosicrucians, and as deadly as the yakuza - before they become its next victims.