Watch Final Kill for Free: How to Stream the Movie Online at 123Movies. . A mercenary is hired to protect a couple hiding out in Central America from a ruthless crime family. In his final assignment as a protector, it quickly turns deadly as a group of mafia henchman descend on the tranquil Costa Rican village. Soon the agent learns that the job is far more than it seems and it will take all of his experience to get them out alive.