 Jack LemmonGeorge Kellerman | George Kellerman |
 Sandy DennisGwen Kellerman | Gwen Kellerman |
 Sandy BaronLenny Moyers | Lenny Moyers |
 Anne MearaPurse Snatching Victim in Police Station | Purse Snatching Victim in Police Station |
 Robert NicholsPassenger | Passenger |
 Ann PrentissAirline Stewardess | Airline Stewardess |
 Ron CareyBarney Polacek, Cab Driver in Boston | Barney Polacek, Cab Driver in Boston |
 Philip BrunsOfficer Meyers | Officer Meyers |
 Graham JarvisMurray the mugger | Murray the mugger |
 Carlos MontalbánManuel Vargas | Manuel Vargas |
 Robert KingAgent in Boston | Agent in Boston |
| JJohnny BrownWaiter in Train | Waiter in Train |
 Dolph SweetPolice Sgt Kavalefski | Police Sgt Kavalefski |
 Thalmus RasulalaPolice Officer | Police Officer |
| JJon KorkesLooter | Looter |
 Robert WaldenLooter | Looter |
 Dort ClarkMan on Train | Man on Train |
 Richard LibertiniBaggage Man - Boston | Baggage Man - Boston |
 Paul DooleyDay Desk Clerk at Hotel | Day Desk Clerk at Hotel |
 Anthony HollandDesk Clerk Night | Desk Clerk Night |
 Billy Dee WilliamsClifford Robinson, Lost & Found Clerk | Clifford Robinson, Lost & Found Clerk |
| BBob BennettMan in Phone Booth - Boston | Man in Phone Booth - Boston |
 Paul JabaraHippie (uncredited) | Hippie (uncredited) |
| RRay BallardNot listed | Not listed |
| MMaxwell GlanvilleNot listed | Not listed |
 Milt KamenNot listed | Not listed |
| NNorma Jean KronNot listed | Not listed |
| AAlfred MazzaNot listed | Not listed |
| TThomas McGowanNot listed | Not listed |
 Merrie Lynn RossNot listed | Not listed |
