Private detectives "Patrick" (Casey Affleck) and "Angie" (Michelle Monaghan) are drafted in by the mother of a missing girl to try to find out what's happened. This is pretty much virgin territory for the pair, but they are local and so might be able to unearth sources unwilling to discuss with the police efforts being led by "Doyle" (Morgan Freeman). Now it's fair to say that the child's mother "Helene" (Amy Ryan) is probably not the most attentive of parents, but she is determined to be reunited with her daughter. What now ensues follows this investigation into their Boston suburb - one that... continuar a ler.