 | Jim Brown als McClain |
 | Diahann Carroll als Ellen "Ellie" Kennedy |
 | Ernest Borgnine als Bert Clinger |
 | Julie Harris als Gladys |
 | Gene Hackman als Lt. Walter Brill |
 | Jack Klugman als Harry Kifka |
 | Warren Oates als Marty Gough |
 | James Whitmore als Herb Sutro |
 | Donald Sutherland als Dave Negli |
 | Joyce Jameson als Jenifer |
 | Harry Hickox als Detective |
 | Jackie Joseph als Jackie |
 | Warren Vanders als Mason |
 | Thordis Brandt als Police Clerk (uncredited) |
 | Calvin Brown als Guard Charlie (uncredited) |
 | Antony Carbone als Man (uncredited) |
| Dee Carroll als Payroll Clerk (uncredited) |
 | George Cisar als Charlie (uncredited) |
| Bill Couch als Physical Instructor (uncredited) |
| Howard Curtis als Physical Instructor (uncredited) |
 | Edith Evanson als Woman in Police Station (uncredited) |
 | Robert Foulk als Police Desk Sergeant (uncredited) |
| Chance Gentry als Policeman (uncredited) |
 | Duane Grey als Payroll Guard (uncredited) |
 | Chuck Hicks als Physical Instructor (uncredited) |
| Jonathan Hole als Ticket Seller (uncredited) |
 | Kenner G. Kemp als Stadium Payroll Guard (uncredited) |
 | Jon Kowal als Guard (uncredited) |
| Cherie Lamour als Teenager (uncredited) |
| Vanessa Lee als Little Girl (uncredited) |
| Tina Menard als Mother (uncredited) |
 | Karen Norris als Toy Shop Proprietress (uncredited) |
 | John Orchard als Guard (uncredited) |
| Roger Owens als Souvenir Stand Vendor (uncredited) |
| Regis Parton als Payroll Guard (uncredited) |
 | Beverly Powers als Clinger's Receptionist (uncredited) |
 | Anne Randall als Negli's Girl (uncredited) |
| George Robotham als Physical Instructor (uncredited) |
 | Barry Russo als Maccione (uncredited) |
| Carl Saxe als Physical Instructor (uncredited) |
| Ron Stokes als Detective (uncredited) |
| Lou Whitehill als Policeman (uncredited) |
| Gordon Flemyng | Director |
| Donald E. Westlake | Novel |
| Robert Sabaroff | Screenplay |
| Robert Chartoff | Producer |
| Irwin Winkler | Producer |
| Quincy Jones | Original Music Composer |
| Burnett Guffey | Director of Photography |
| Rita Roland | Editor |
| George W. Davis | Art Direction |
| Urie McCleary | Art Direction |
| F. Keogh Gleason | Set Decoration |
| Henry Grace | Set Decoration |
| Sydney Guilaroff | Hairstylist |
| John Truwe | Makeup Artist |
| William Tuttle | Makeup Artist |
| Jim Henderling | Unit Production Manager |
| Lindsley Parsons Jr. | Assistant Production Manager |
| Al Jennings | Assistant Director |
| Lynn Guthrie | Second Assistant Director |
| Franklin Milton | Sound |
| Calvin Brown | Stunts |
| Gene LeBell | Stunts |
| Calvin Brown | Stunt Double |
| Paul Baxley | Stunt Coordinator |
| Bill Couch | Stunts |
| Regis Parton | Stunts |
| George Robotham | Stunts |
| Chuck Hicks | Stunts |
| Howard Curtis | Stunts |
| James J. Casino | Stunt Double |
| Carl Saxe | Stunts |
