"There are crazy people all over, you know that, don't you?" Spring was intoxicating the city air, but the harassing anonymous telephone calls planting seeds of fear around town were no April Fool's joke. Crank calls and crackpot threats reported to the 87th Precinct by a respected businessman were not exactly top priority for detectives Carella and Meyer -- until a brutal homicide hits the papers. Connections are getting made fast and furious, and there's a buzz in the air about the Deaf Man, a brilliant criminal mastermind. Now, the 87th Precinct is buying time to reveal the voice on the other end of the line -- as the level of danger rises from a whisper to a scream....