In this episode, Robert Buckley (Clay) is a zombie in Quinn's dream. He now plays a zombie on iZombie on the CW
Austin Nichols fights zombies in the beginning of the episode, and he fights them now on The Walking Dead.
The episode is named after a song from Eminem's seventh studio album 'Recovery'. The title plays on the fact that the episode takes place on Halloween.
Opening theme song performed by Laura Izibor
The number 23 is the last act of the night, and it's Laura Izibor performing Can't Be Love. This number consistently shows throughout the series, most frequently as Nathan's jersey number. Haley also has 23 tattooed on her lower back.