A Balada de Nova Iorque

A 9 year-old girl is found dead inside a locked basement, the supervisor is the only key-holder, but he has an alibi. Sipowicz and Sorenson have to solve the whodunit. Medavoy and Martinez help an old man to trace the person who swindled him out of 8000 dollars. Sorenson's sister comes to visit him. Dolores father turns up at the squad room.