THE FILM STRESSES THE IMPORTANCE OF THE POINT OF ORIGIN OF CRIMINAL IF THE UNDERCOVER AGENT PUTS THE IDEA OF A CRIME IN THE MIND OF A PERSON WHO WOULD NOT NORMALLY CONSIDER SUCH AN ACT, THE RESULT IS ENTRAPMENT AND THE ARREST IS WORTHLESS. IF, HOWEVER, THE SUBJECT IS PREDISPOSED TOWARD AN ILLEGAL ACT, THE ARREST IS VALID AND THE CASE CAN BE HANDED OVER TO THE DISTRICT ATTORNEY. THE EXAMPLES THAT ARE GIVEN INVOLVE DRUGS, PROSTITUTION, AND THEFT. EACH EXAMPLE PLAINLY SHOWS AN ENTRAPMENT SITUATION FOLLOWED BY LEGALLY ACCEPTABLE POLICE PROCEDURE. IT IS OBVIOUS FROM THE FILM THAT FOR A 'SETUP' TO BE LEGAL THE SUBJECT MUST BE WILLING TO BREAK THE LAW: IF A POLICEMAN MERELY GIVEN HIM THE OPPORTUNITY TO DO SO, NO ENTRAPMENT IS INVOLVED. EACH EXAMPLE IS FOLLOWED BY A BRIEF DISCUSSION. AT THE END OF THE FILM, THE FINER POINTS ARE CLARIFIED IN THE LIGHT OF THE EXAMPLES. (SNI ABSTRACT)