Guest Stars: Carl Betz (Jeff Williams), Geraldine Brooks (Alice Williams), Patrick Conway (Victor A. Coyle), Norman Alden (Sgt. Dan Healy), Hari Rhodes (Charlie Johnson)
Co-Starring: Barney Phillips (Jim Dayton), Peter Hobbs (Dr. Marvin Borrman), Robert Cleaves (Albert Phillips)
With: Ruth Kobart, Flip Mark, Jim Waring, Read Morgan, Lee Harris, William Tregoe, Joseph Reynolds
A college professor has an important piece of evidence in a murder case inside his body--the bullet, which passed through the victim and into him. Stone and Keller must figure out what he was doing at the murder scene and why he's so reluctant to have the bullet taken out.