![Man's Best Friend](https://image.tmdb.org/t/p/w500/5oqPaAiwflr1o4PlNvkAGRC9DCX.jpg)
When BCPD’s police dog, Cookie, sniffs out a stash of heroin in a young girl’s backpack, Russ and Milt have competing theories as to where it came from and why she had it. Also, Jacocks travels to Detroit for a training seminar, with the ulterior motive of finding out why Milt was sent to Battle Creek.