Liv takes Ruby to a spooky dinner and runs into an old acquaintance and Maddie comes face-to-face with the real-life spider-sprayer. Meanwhile, Parker and Joey must convince their classmates to celebrate Halloween.
- Dove Cameron as Liv and Maddie Rooney
- Joey Bragg as Joey Rooney
- Tenzing Norgay Trainor as Parker Rooney
- Kali Rocha as Karen Rooney
- Lauren Lindsey Donzis as Ruby
- Emmy Buckner as Liv 2
- Shelby Wulfert as Maddie 2
- Amarr. M. Wootten as Finch
- Chloe East as Val Wishart
- Jolie Jenkins as Aunt Dena
- Aaron Hendry as Henry/Torture King
- This is the very last Halloween episode for the series.
- The kids Maddie showered with marshmallows were played by the twin nephews of the director.
- On March 8th 2016, Dove Cameron posted photos on Snapchat wearing a green Halloween wig and announced a Halloween episode was in the works.
- This is part of Disney Channel's Monster theme.
- Ruby dresses up as SkyVolt for Halloween. This is the first time since SkyVolt-A-Rooney, that the costume is seen.
- Aaron Hendry guest stars in this episode playing the Torture King. He also guest starred in the season 3 episode, SkyVolt-A-Rooney, as Zaydock. It's revealed they are the same person.
- Voltage is mentioned and its revealed that since Liv left the show, the storyline of Zaydock's resurrection "went out of the window". This means that for that storyline to work, Tess had to be alive.
- Liv meets Henry, the actor who played Zaydock. However, Liv never saw him outside of character until this episode.
- Aunt Dena is the Spider Sprayer.
- Originally, David Tolentino, one of the writers, was supposed to come out of the pod, but decided to get Joey Bragg to do it instead.
- When Joey gets "teleported" with the chicken, Parker calls him by his real name instead of "Falcon" in front of his classmates. His classmates don't seem to notice this, however, and it is unknown if it was a mistake or not.
- This is the first episode in season 4 that features a new location set, which isn't a studio or school set.
| To view the Scare-A-Rooney gallery, click here.
| To view the Scare-A-Rooney video gallery, click here.