Haunted Harmony Mysteries: Key to the Castle

About Haunted Harmony Mysteries: Key to the Castle

When a ghost hunter show comes to town, it's up to Gethsemane and Eamon to solve the unexpected murder of the host, allowing the brand-new spirit to cross-over.

Haunted Harmony Mysteries: Key to the Castle (2026) is a mystery tv movie film directed by Linda-Lisa Hayter. It runs 84 minutes and was released in May 2026.

Tamera Mowry-Housley stars as Gethsemane Brown, Marco Grazzini as Griff, Risteard Cooper as Eamon, and Adam Fergus as Inspector O'Reilly. Written by Kraig Wenman. It was produced by Hallmark Media.

In the United States it streams on fuboTV, Hallmark+ Amazon Channel, and Hallmark+ Apple TV channel.