|Clint Eastwood||Harry Callahan|
|John Larch||Police Chief|
|Andy Robinson||Scorpio Killer|
|John Vernon||The Mayor|
|John Mitchum||Di Giorgio|
|Mae Mercer||Mrs. Russell|
Cop Harry Callahan attempts to track down a psychopathic rooftop killer before a kidnapped girl dies. When he is found Harry abuses the murderer's civil rights putting him back on the streets. Once he is released he hijacks a school bus and Harry must go after him again. The only way to stop this vicious killer is in cold blood.