It gets personal for Det. Jim Longworth when two escaped inmates take the hospital Callie works at hostage on the season finale of 'The Glades' (Mon, 10PM ET on A&E).
When he brought the money they had demanded, there was a stand-off between Longworth and the cons. Only, at that time they still had the leverage, and they knew he had special feelings for Callie (which he may never act on because this is television), so she was an especially valuable hostage.
"You harm one hair on her head, and I will hunt you down and kill you like a dog," he told them.