When 4 year old Amanda McCready disappears from her home and the police make little headway in solving the case, the girl's aunt, Beatrice McCready hires two private detectives, Patrick Kenzie and Angie Gennaro. The detectives freely admit that they have little experience with this type of case, but the family wants them for two reasons - they're not cops and they know the tough neighborhood in which they all live. As the case progresses, Kenzie and Gennaro face drug dealers, gangs and pedophiles. When they are about to solve the case, they are faced with a moral dilemma that tears them apart.
| Directing | Ben Affleck | Director |
| Writing | Ben Affleck | Screenplay |
| Writing | Aaron Stockard | Screenplay |
| Writing | Dennis Lehane | Novel |
| Production | Sean Bailey | Producer |
| Production | Alan Ladd, Jr. | Producer |
| Camera | John Toll | Director of Photography |
| Editing | William Goldenberg | Editor |
| Production | Donna Morong | Casting |
| Camera | Claire Folger | Still Photographer |
| Art | Sharon Seymour | Production Design |
| Camera | P. Scott Sakamoto | Steadicam Operator |
| Art | Chris Cornwell | Art Direction |
| Art | Kyra Friedman Curcio | Set Decoration |
| Production | Danton Rissner | Producer |
| Production | Chay Carter | Co-Producer |
| Sound | Harry Gregson-Williams | Original Music Composer |
| Costume & Make-Up | Alix Friedberg | Costume Design |
| Crew | Conrad V. Brink Jr. | Special Effects Coordinator |
| Production | David Crockett | Executive Producer |
| Production | Amanda Lamb | Associate Producer |
| Production | Aaron Stockard | Associate Producer |
| Directing | Sheila Waldron | Script Supervisor |
| Camera | P. Scott Sakamoto | Camera Operator |
| Sound | Nic Harcourt | Music Supervisor |
| Sound | Sally Boldt | Music Editor |
| Sound | Christian P. Minkler | Sound Re-Recording Mixer |
| Sound | Jon Taylor | Sound Re-Recording Mixer |
| Sound | Alan Rankin | Sound Designer |
| Sound | Mark P. Stoeckinger | Supervising Sound Editor |
| Costume & Make-Up | Mary L. Mastro | Hair Department Head |
| Costume & Make-Up | John E. Jackson | Makeup Department Head |
| Costume & Make-Up | Trish Seeney | Makeup Artist |
| Costume & Make-Up | Nancy Hancock | Makeup Artist |
| Costume & Make-Up | Deena Adair | Hairstylist |
| Art | J.M. Hunter | Art Department Coordinator |
| Crew | Cort Hessler | Stunt Coordinator |
| Art | Kurt Smith | Leadman |
| Costume & Make-Up | Brenda McNally | Hairstylist |
| Production | David Crockett | Unit Production Manager |
| Costume & Make-Up | Hope Slepak | Costume Supervisor |
| Camera | Mike Thomas | Camera Operator |
| Sound | Jim Stuebe | Production Sound Mixer |
| Sound | Kevin Hyde | Boom Operator |
| Crew | Jarrett Simon | Cableman |
| Editing | Michael Tronick | Additional Editing |
| Editing | Brett M. Reed | First Assistant Editor |
| Editing | Kevin Hickman | Assistant Editor |
| Crew | Tina Anderson | Post Production Supervisor |
| Crew | Joe Galdo | Post Production Assistant |
| Production | Jeff Valeri | Production Coordinator |
| Art | Vanessa Pyne | Art Department Assistant |
| Art | George Lee | Set Designer |
| Art | Joseph Kearney | Construction Coordinator |
| Art | Steve DeBoer | Construction Foreman |
| Production | Charles Harrington | Location Manager |
| Crew | Amy Cohn | Unit Publicist |
| Production | Desiree Varni | Production Accountant |
| Crew | Robert Martini | Transportation Coordinator |
| Crew | Jimmy Flynn | Transportation Captain |
| Crew | Nathaniel Stutz | Craft Service |
| Crew | Tracy R. Spiegel | Craft Service |
| Writing | Jonathan Woods | Storyboard |
| Visual Effects | Mark S. Driscoll | Visual Effects Producer |
| Visual Effects | Henrik Fett | Visual Effects Supervisor |
| Visual Effects | Andy Simonson | Visual Effects Coordinator |
| Sound | Ladd McIntosh | Orchestrator |
| Editing | Mathieu Reid | Color Timer |
| Crew | Matt Damon | Thanks |
| Crew | Jerry Bruckheimer | Thanks |
| Crew | Manny Ramírez | Thanks |
| Crew | Terrence Malick | Thanks |
| Production | Nadia Aleyd | Casting Associate |
| Crew | Lisa Shaftel | Scenic Artist |
| Sound | Glynna Grimala | Dialogue Editor |
| Sound | Chris Hogan | Dialogue Editor |
| Sound | John C. Stuver | Dialogue Editor |
| Art | Jeffrey Paul Johnson | Property Master |
| Sound | Jeff Largent | Sound Recordist |
| Sound | Kerry Dean Williams | ADR Supervisor |
