Synopsis for
Gone Baby Gone (2007)

A 4-year-old girl is missing in a tough Boston neighborhood, and private investigators Patrick Kenzie and Angela Gennaro (Casey Affleck and Michelle Monaghan) are asked by family to assist in the case. Kenzie is a street-wise P.I. who utilizes his knowing locals from school to help in the investigation. But this is no easy case, and the there are drug thugs, money, and liars around who complicate their work.

Language and violence give it the R rating, but this is well worth viewing.

Ben Affleck's directorial debut, adapted from the Dennis Lehane novel, also stars Ed Harris, Morgan Freeman and Amy Ryan (in her first Oscar-nominated role for best supporting actress as the missing girl's mother).