City of glass: As a result of a strange phone call in the middle of the night, Quinn, a writer of detective stories, becomes emmeshed in a case more puzzling than any he might have written.

Ghosts: Blue, a student of Brown, has been hired by White to spy on Black. From a window of a rented room on Orange Street, Blue keeps watch on his subject, who is across the street, staring out of his window.

The locked room: Fanshawe has disappeared, leaving behind his wife and baby and a cache of extraordinary novels, plays, and poems. What happened to him and why is the narrator, Fanshawe's boyhood friend, lured obsessively into his life?