Tense detective thriller, directed by Ben Affleck, about a small-time private investigator hired to find a kidnapped girl. Living and working in a run-down, impoverished district of Boston, Patrick Kenzie (Casey Affleck), along with his partner Angela (Michelle Monaghan), investigates the cases nobody else wants. When four-year-old Amanda McCready (Madeline O'Brian) disappears from her drug addict mother's house, the local police investigation, led by Capt. Jack Doyle (Morgan Freeman), comes up short. Hired by Amanda's aunt because they know the area and the locals so well, Patrick and Angela set out to uncover the truth, but soon find themselves caught up in a web of lies and corruption that threatens their relationship.