"Red Dragon" is a crime thriller novel by Thomas Harris, first published in 1981. The book introduces the character of FBI profiler Will Graham, who has a unique ability to empathize with serial killers, allowing him to understand their thought processes and motives. In the story, Graham comes out of retirement to help solve a string of murders committed by a serial killer known as the "Tooth Fairy."

The novel is divided into several parts, each focusing on a different character or aspect of the investigation. The first part introduces Graham and his pursuit of the "Tooth Fairy," who is revealed to be a man named Francis Dolarhyde. The second part delves into Dolarhyde's past, revealing the traumatic events that led to his descent into madness. The third part follows Graham's attempts to track down Dolarhyde before he can strike again.

As Graham delves deeper into the case, he becomes increasingly disturbed by the similarities between himself and the killer. He is forced to confront his own inner demons as he races against time to stop Dolarhyde from committing more atrocities. Along the way, Graham receives help from a variety of sources, including his former boss at the FBI and a tabloid journalist named Freddy Lounds.

The tension in the novel builds steadily as the investigation unfolds, culminating in a thrilling confrontation between Graham and Dolarhyde. Harris masterfully weaves together elements of psychology, forensics, and police procedural to create a chilling and unforgettable story.

"Red Dragon" has been adapted into several films and TV series, including the 1986 film "Manhunter" and the acclaimed 2002 film "Red Dragon," starring Anthony Hopkins as Hannibal Lecter and Edward Norton as Will Graham. The novel has been praised for its complex characters, gripping plot, and intense psychological themes. It is a must-read for fans of crime fiction and anyone interested in the inner workings of the criminal mind.