Alex Lewis ( Liam Neeson ) is an expert assassin-for-hire living in El Paso, Texas, who is ready to retire as he begins to battle early-onset Alzheimer's disease. His final assignment takes a dark turn when he is ordered to kill a 13-year-old girl.

R (for graphic violence, bloody images, and strong language) The Plot

Guided by a strict moral code, Alex refuses the contract, making him a target for both his dangerous employers and a determined FBI agent, Vincent Serra ( Guy Pearce ). As his memory begins to fail, Alex must use his skills to hunt down those behind a child sex-trafficking ring before his mind betrays him completely or law enforcement catches up to him. Memory movie review & film summary - Roger Ebert