Broadway is My Beat - The Joe Gruber Murder Case

Detective Danny Clover and Detective Muggerman are currently on a stakeout in front of an apartment house in the West 80s. The stakeout is for an armed robber who had shot a bystander to death, ran across roofs, and down alleys. He was finally trapped. Muggerman says "He's hold up on the second floor, Danny, in an empty apartment. Ready?" Danny says "Let's go". As they walk toward the entrance, Danny asks "Are all the other tenants cleared out?" Muggerman says "Uh-huh. Had a little trouble with the people in 2B". Danny asks "How come?" Muggerman says "The people there are named Morgan. Their grandmother died, and they were having her funeral in there. We got all the mourners out. They were in the apartment right next to the one our killer's in, 2A".  Danny asks "You sure he's in there?" Muggerman says "Probably him, Danny. The description fits". Danny says "Let's find out". Danny knocks on the door and says "Open up. This is the police". After getting no response, Danny tells Muggerman to kick in the door. Once inside, Muggerman says "Those windows over there, Danny, are open. The screen's been kicked out. Come on". They get to the window, and Danny says "The killer left this apartment in a hurry". Muggerman says "Uh-huh. These windows lead to a fire escape. He could have gone out this window, onto the fire escape, and into the next apartment". Danny says "Let's find out". They walk on the fire escape to the window of apartment 2A. Danny says "Yeah. He must have done it this way. The screens on this apartment have been knocked out, too. Let's go inside and see". Muggerman says "This is the Morgan apartment, Danny. Where is the Morgan grandmother? You want me to look around?" Danny says "Yeah, for appearances, Muggerman. I'm guessing our man walked out with the mourners and got lost".