A fool-proof formula for picking winning horses on a computer disc is the Maguffin sought by Cleveland and others.
| Actor | Role |
|---|---|
 Ian McShaneDavid Cleveland | David Cleveland |
 Patrick MacneeGeoffrey Keeble | Geoffrey Keeble |
| JJohn KeeganTed Pitt | Ted Pitt |
| KKate McKenzieCassie Donovan | Cassie Donovan |
| KKarl HaydenWilliam Derry | William Derry |
 Dearbhla MolloyDonna Keithley | Donna Keithley |
 Niall TóibínMartin Fitzgerald | Martin Fitzgerald |
 Conor MullenLiam Fitzgerald | Liam Fitzgerald |
 David HerlihyEddy McGuire | Eddy McGuire |
 Stephen BrennanMike Needham | Mike Needham |
 Oliver MaguirePatrick Donovan | Patrick Donovan |
 Pat LeavyMrs. Sullivan | Mrs. Sullivan |
 Geraldine FitzgeraldMrs. O'Rourke | Mrs. O'Rourke |
| JJim ReidPoliceman | Policeman |
 Deirdre O'KaneReceptionist | Receptionist |