Liam Neeson stars in Scott Frank’s A Walk Among the Tombstones (2014), a dark and atmospheric crime thriller based on Lawrence Block’s bestselling novel. Neeson plays former NYPD cop Matt Scudder, now an unlicensed private investigator drawn into the hunt for sadistic killers targeting drug traffickers’ families. Gritty, methodical, and morally cold, it blends neo-noir realism with psychological tension.

Från IMDB:
Private investigator Matthew Scudder is hired by a drug kingpin to find out who kidnapped and murdered his wife.