A man inadvertently gets caught near a car explosion, and after he recovers from his injuries realizes that he has amnesia. Soon evidence begins to mount that he could be "The Claw Hammer Killer, " a serial murderer who targets for death the former patrons of a particular restaurant called Puzzles.

With a fulfilling career and a loving relationship, lobbyist Leah Vaughn seems to have it all. Things come crashing down when Dave, her long-term boyfriend, disagrees with her future plans for marriage and a family. The resulting painful breakup leaves Leah heartbroken, until she meets the charming and handsome Carter Duncan. Soon, the budding romance turns dangerous as Carter reveals his volatile nature, forcing Leah to break up with the man she thought was Mr. Right. She soon realizes that Carter doesn't want to let her go.

College student Jake Lo is pursued by smugglers, mobsters and crooked federal agents after he witnesses a murder by a Mafia kingpin.