Mystery Island: House Rules on Hallmark Channel — How to Watch

It’s time to take another trip to Mystery Island in Mystery Island: House Rules. This time around, a friendly competition turns deadly and everyone’s a suspect.

This is the fourth movie in the Mystery Island franchise, which kicked off with 2023’s Mystery Island and continued with 2025’s Winner Takes All and Play for Keeps.

The annual Fall Into Love celebration kicked off Saturday, September 6, and featured the Hallmark Channel network premieres of The Groomsmen: First Look, The Groomsmen: Second Chances and The Groomsmen: Last Dance. The celebration wraps up with the premiere of another all-new original movie, Adventures in Love & Birding, featuring Andrew Walker and Rachel Boston.

What is Mystery Island: House Rules about?

Here’s the official synopsis of Mystery Island: House Rules from Hallmark Channel: “Mystery Island success raises plans of expansion, and the Island team meets their Mystery Mountain counterparts for a friendly murder game, but the fun ends with a murder in plain sight.”

Who is in it?

Mystery Island: House Rules features Elizabeth Henstridge (Suspicion) as Emilia and Charlie Weber (How to Get Away with Murder) as Jason.

How to watch Mystery Island: House Rules

Mystery Island: House Rules premieres Sunday, September 14, at 8pm ET/PT on Hallmark Channel and will be available to stream the following day on Hallmark+ with a paid subscription.

Hallmark Channel and Hallmark Mystery are included in many cable TV packages. You can also access Hallmark Channel and Hallmark Mystery via Philo, Sling TV, Frndly TV, Hulu with Live TV, YouTube TV and Fubo. Hallmark Plus is a standalone streaming service that requires its own subscription; new movies and series episodes are available to stream on the platform day after they air.

Watch the trailer

Take a look at the preview and sneak peek of Mystery Island below.

Are you looking forward to Mystery Island: House Rules? Let us know in the comments!