When Cyd tries to protect Diesel from Barry’s wolf serum experiment, she accidentally gets the serum on herself and turns into a menacing werewolf. Now Shelby must try and figure out how to get her best friend back before the she-wolf destroys their high school’s Halloween carnival And Haunts the School.
- Lauren Taylor as Shelby Marcus
- Landry Bender as Cyd Ripley
- Gus Kamp as Barry Eisenberg
- Ricky Garcia as Naldo Montoya
- Benjamin Royer as Bret Marcus
- Matthew Royer as Chet Marcus
- This is a Halloween themed episode.
- This is the second Halloween themed episode of the series, first being, Cyd & Shelby's Haunted Escape.
- This is the first new episode to air after a 2 month hiatus.
- Similarly, a Monstober episode of KC Undercover, All Howls Eve also featured a wolf serum that did something similar and made Ernie act like a werewolf.
- This is the first episode with no recurring or guest characters.
- December 26, 2016 (Israel)
- December 31, 2016 (Latin America, Brazil)
| To view the Night of the Were-Diesel gallery, click here.