He's got that thing with his jaw that he does and the throbbing vein in his neck.
Sein 
Kiefer verkrampfte, und die Halsschlagader pulsierte.
 
 
Jimmy Bags, whose jaw you broke happens to work undercover for the Boston Police Department.
Jimmy Bags, dem Sie den 
Kiefer gebrochen haben, arbeitet undercover für das Boston Police