A young woman gets on an elevator with an older man. When the door opens on his penthouse, he is shot by an unseen person. The girl is not hurt and the team must track her down as she is the only eye-witness of the murder. Stella and Sheldon Hawks fish a body out of a pond in Central Park. The man, however, did not die from drowning. He suffered a fatal allergic reaction.

Four men are playing poker in an apartment. When they catch a man cheating, the other men throw him out. Just a few moments later, the doorbell rings; when one of the players looks through the peephole, expecting to see the recently departed cheater, he is facing the barrel of a shotgun and is instantly killed. Meanwhile, in Central Park, a TV weather girl is found dead on the ground. Autopsy reveals that she drowned, even though there is no water near the crime scene.