It's the Captain's day tour on a beautiful, bright and sunny Saturday. People are flocking to the attractions in Central Park and it's very busy in New York City. On the way back to the station house, Captain Kennelly spots the Sergeants car double parked at the entrance to a large modern apartment house, so they decide to check things out, and pull up behind it. They need to talk to the resident doctor about his child, who has been lost for the past few hours...