Locke & Key is rated 18 due to its mature themes and content, including:
- Violence: The show features scenes of violence, including physical fights, weapons, and some graphic imagery.
- Horror: Locke & Key explores themes of horror, featuring supernatural elements, monsters, and scary situations.
- Sexual Content: There are scenes of sexual content, including implied nudity and suggestive dialogue.
- Drug Use: The show depicts drug use, including alcohol and marijuana.
- Mature Language: Locke & Key uses mature language, including strong language and profanity.
These elements contribute to the show's rating of 18, indicating that it is not suitable for younger viewers.