Are You Doing a Rear Window?

Moon runs into Mr. Golovkin taking a pot from the school kitchen, saying that it's for cooking someone. From this and the fact that Ms. Anderson, who has been missing lately, he, Quinn, and Russell assumes that Golovkin is a cannibalistic serial killer and/or he makes drugs. Golovkin catches them snooping around his home, and specifically mentions Rear Window in reference to this trope, even pointing to a poster of the film on his rec room.

Example of:
"Rear Window" Investigation