Bob Keppel

Keppel retired as chief criminal investigator for the Washington State Attorney General's Office. He joined the faculty of the Seattle University. As of 2004, Keppel was an associate professor of criminal justice at Sam Houston State University, and currently teaches there via teleconference. In 2007, Keppel joined the University of New Haven as an associate professor of criminal justice.

Keppel is author of The Riverman: Ted Bundy and I Hunt for the Green River Killer, made into a made-for-TV movie of the same name in 2004, starring Bruce Greenwood as Keppel and Cary Elwes as Bundy. He is also the author of many textbooks regarding criminal justice and related topics.

Keppel was asked to assist in the Green River Task Force for the investigation of a set of murders in Washington. By 1984, Ted Bundy began writing letters to Robert Keppel in hopes to help in the investigation of the Green River Killer. This correspondence led to interviews between the two, which resulted in Bundy confessing to his unidentified crimes days before his execution.

Robert David Keppel (born June 15, 1944) is an American former law enforcement officer and detective. He is also a former associate professor at the University of New Haven and Sam Houston State University. Keppel is known for his contributions to the investigations of Ted Bundy and Gary Ridgway, and also assisted in the creation of HITS, the Homicide Investigation Tracking System.