In a regular spring day, a carjacker pulled a woman out of his car, leaving her in the middle of the street. The car was found right away, but the toddler placed in the back seat was abducted. CCTV footage at a local bodega caught a portrait of the kidnapper: neither the mother, nor the divorced father actually recognized him. Later on, detectives managed to locate and to arrest him; he didn't want a ransom, he had just wanted to play with justice. The perp (James Le Gros) is a real piece of work, used to be in and out of prison, so McCoy found it very hard to deal with this junk lowlife. Furthermore, his behavior put Fontana and Green really in anger (mainly during the puppet scene). Anyway, he was the only one who knew where the baby was hidden and that put the entire criminal system in a difficult situation not so easy to solve without a deal...
A man of integrity like McCoy put his workplace at stake, by confronting his boss in the way he did. On the other side, the only thing that counts for Arthur Branch is politics.