His Duty (1909)

Its Bob Allens twentyfirst birthday His mother and his brother Jack a policeman present him with a cap personalized with his initals in the lining Jack then goes to work and Bob goes out also Later in the evening Jack is called to the scene of a robbery where he finds the cap with his brothers initials Dismayed by the idea that his brother is a thief he goes home and confronts Bob with the evidence Though it breaks their mothers heart Jack does his duty and leads his brother out in handcuffs