Weil der siebenj‰hrige Simon einen neuen Top-Secret-Code geknackt hat, muss Art Jeffries (Bruce Willis), FBI-Mitarbeiter im Innendienst, gegen skrupellose Bundesagenten antreten, um das Leben des autistischen Jungen zu sch¸tzen. F¸r Simon ist die angeblich absolut sichere Verschl¸sselungsmethode MERCURY so leicht zu lesen wie f¸r andere Kinder ein Comic. Diese F‰higkeit macht den neuen Milliarden-Dollar-Geheimschl¸ssel verletzlich, insbesondere wenn Feinde ver Vereinigten Staaten von Simons F‰higkeiten Wind bekommen und ihn entf¸hren. Projektleiter Nick Kudro (Alec Baldwin) befiehlt, das "Sicherheitsrisiko" zu eliminieren, aber er hat dabei nicht mit Jeffries gerechnet. Auf der Flucht vor kaltbl¸tigen Attent‰tern erkennt Jeffries schnell, dass er niemanden vertrauen kann. W‰hrend die Uhr unaufhaltsam tickt, wird ihm klar, dass seine Feinde nur mit Hilfe von Simons besonderer Gabe aufgehalten werden kˆnnen.
| Bruce Willis | Art Jeffries |
| Alec Baldwin | Nicholas Kudrow |
| Miko Hughes | Simon |
| Chi McBride | Tommy B. Jordan |
| Kim Dickens | Stacey |
| Robert Stanton | Dean Crandell |
| Bodhi Elfman | Leo Pedranski |
| Carrie Preston | Emily Lang |
| Lindsey Ginter | Burrell |
| Peter Stormare | Shayes |
| Kevin Conway | Lomax |
| John Carroll Lynch | Martin Lynch |
| Kelley Hazen | Jenny Lynch |
| John Doman | Supervisor Hartley |
| Richard Riehle | Edgar Halstrom |
| Chad Lindberg | James |
| Hank Harris | Isaac |
| James MacDonald | SWAT Team Leader Francis |
| Camryn Manheim | Dr. London |
| Jack Conley | Detective Nichols |
| Maricela Ochoa | Charlayne |
| Peter Fontana | Pasquale |
| Kirk B.R. Woller | Lieutenant |
| Betsy Brantley | Special Ed. Teacher #2 |
| Ashley Knutson | Samantha |
| Joseph Singer | Executive Producer |
| Tom Gallop | Medic |
| Margaret Travolta | Autism Expert Nurse |
| Tiffany Fraser | Night Nurse |
| KoKo Taylor | KoKo Taylor |
| Matt Levert | Tommy Jordan Jr. |
| Lisa Summerour | Dana Jordan |
| Barbara Alexander | Librarian |
| Gwen McGee | Security Woman |
| Ned Schmidtke | Senator |
| Kristina Eliot Johnson | Special Ed. Teacher #1 |
| James Krag | Rookie Agent Roger |
| Wadell Brown | Bank Security Guard |
| Tim Grimm | Ted (Security Guard) |
| John Scanlon | South Dakota Helicopter Pilot |
| John T. Scanlon | South Dakota Helicopter Pilot |
| Kristina Eliot Johnsen | Special Ed Teacher #1 |
| Annabel Armour | Ruth |
| Brent Freeman | Marine Guard |
| Gary Hand | Kudrow's Assistant |
| Michael Chieffo | Hostage |
| Steve Key | Cop at Lynch House |
| Darryl Alan Reed | Ambulance Driver |
| Steve Rankin | WGEX Helicopter Pilot |
| Maureen Gallagher | Flea Market Lady |
| Mark Collins | Train Conductor |
| Denise Woods | Nurse in Elevator |
| Kim Robillard | Motorman |
| Thomas F. Duffy | Audey |
| Joseph M. Singer | Executive Producer |
| David Fordham | |
| Ric Kidney | Executive Producer |
| Rosemary Garris | Office Worker (uncredited) |
| Michael Seresin | Director of Photography |
| Joel King | (uncredited) |
| Deborah Leydig | (uncredited) |
| Peter Honess | Film Editor |
| John Barry | Composer |
| Elaine Abernathy | Asian Tourist (uncredited) |
| Kim H. Ornitz | production sound mixer |
| Spitfire Brown | Security Guard (uncredited) |
| Terry Rodman | Supervising Sound Editor |
| Jude Ciccolella | FBI Agent Blackwell (uncredited) |
| Phil Donlon | Young Waiter (uncredited) |
| Bruce Fortune | Sound Editor |
| Kimberly Lowe Voigt | Sound Editor |
| David Michael Fordham | (uncredited) |
| Mildred Iatrou Morgan | Sound Editor |
| Joseph DiVitale | Sound Editor |
| Reese Foster | Man Pushed Down Escalator (uncredited) |
| Richard E. Yawn | Sound Editor |
| Steve Mann | Sound Editor |
| Steve Nelson | Sound Editor |
| Brian Best | Sound Editor |
| Robert Maffia | FBI Agent Leeb (uncredited) |
| Shannon Parr | Leslie Turpel (uncredited) |
| Steve Maslow | Sound Re-Recording Mixer |
| Gregg Landaker | Sound Re-Recording Mixer |
| Pamela Gaye Walker | Susan (uncredited) |
| Betsy Heimann | Costume Designer |
| Patrizia von Brandenstein | Production Designer |
| Michael Owens | Visual Effects |
| James F. Truesdale | Art Director |
| Steve Saklad | Art Director |
| Leonard Engelman | Make-Up Artist |
| Jerry Quist | Make-Up Artist |
| Guy Clayton | Visual Effects |
| Burt Dalton | Visual Effects |
| Gerald Quist | Make-Up Artist |
