Castle

Beckett: (about the victim) She's melting. Castle: Maybe we should be looking for ruby slippers. Beckett: Yeah, while you're at it, why don't you look for flying monkeys. Maybe they left her here. This is a reference to the 1939 film The Wizard of Oz.

Ryan: Sure they do. Quantum physics, alien abductions, Schrödinger's cat. One minute you're getting a hot dog in the park, the next you're fighting off Sleestaks on the far side of a dimensional rift. Schrödinger's cat is a paradox devised by Austrian physicist Erwin Schrödinger in 1935. Schrödinger theorized that a cat in a box with a can of poison gas activated by the decay of a radioactive atom would, at any one instant, be both dead and alive at the same time. The superposition of two states collapses to one state or the other only when the box is opened and the cat observed. Schrodinger created the thought experiment to show the conflict between quantum level behavior and macroscopic behavior. Sleestaks are large, scary, green humanoids with both reptilian and insectoid features from the 70's TV series Land of the Lost.

Det. Becket: How'd you know? Castle: Spidey-sense. "Spidey-sense" (more commonly called "spider-sense") is a precognitive power possessed by the Marvel Comics superhero Spider-Man.