Watch Lessons for an Assassin Full Movie Free Online 123Movies. Criminal Gavin Matthews finds himself an unwilling recruit, who's identity and past has been erased by "The Corporation," a secret underground organization that acts as a rogue "Justice Department," righting the wrongs the courts cannot. Now, held with other "recruits" at The Corporation's training and reeducation facility, Matthews and the others will become useful and professional assassins...or they will be eliminated. As his training is completed, Matthews and his trainer discover The Corporation's true purpose and learn they are to be eliminated when their assignment is complete. Now they must execute their own form of justice before it's too late.