Read on for more about Haunted Harmony Mysteries: Key to the Castle below and don't forget to check out the Parade exclusive sneak peek!
When a ghost hunter show comes to town, it's up to Gethsemane (Tamera Mowry-Housley) and Eamon (Risteard Cooper) to solve the unexpected murder of the host, allowing the brand-new spirit to cross-over.
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Who's in the Cast ofHaunted Harmony Mysteries: Key to the Castle?
Tamera Mowry-Housley Credit: ©2026 Hallmark MediaHallmark Media
Tamera Mowry-Housley as Gethsemane
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Risteard CooperRisteard Cooper as Eamon
Comedian-writer-actor-singer Risteárd Cooper has mainly a stage background. But he has appeared in several popular UK series, including No Offence, Quiz and The Inheritance.
Marco GrazziniMarco Grazzini as Griff
Fun fact: Grazzini is married to Hallmark alum Alvina August.
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Adam FergusHallmark Media
Haunted Harmony Mysteries: Key to the Castle premieres on Saturday, May 30at 8 p.m.ET on Hallmark Channel and is available to stream the next day on Hallmark+.
Does Parade have a sneak peek of Haunted Harmony Mysteries: Key to the Castle?
Yes! Check out this Parade exclusive sneak peek of Haunted Harmony Mysteries: Key to the Castle below:
PARADE Excusive - Haunted Harmony Mysteries: Key to the Castle=Sneak Peek (2:08)Take a look at some select images from Haunted Harmony Mysteries: Key to the Castle in the gallery below.
Haunted Harmony Mysteries: Key to the Castle
Hallmark Media
Credit: ©2026 Hallmark MediaHallmark Media
Tamera Mowry-Housley Credit: ©2026 Hallmark MediaHallmark Media
Ciara Gallagher Credit: ©2026 Hallmark MediaHallmark Media
Aiden Redmond Credit: ©2026 Hallmark MediaHallmark Media
Fianna Nolan, Tamera Mowry-Housley Credit: ©2026 Hallmark MediaHallmark Media
Credit: ©2026 Hallmark MediaHallmark Media
Adam Fergus, Tamera Mowry-Housley Credit: ©2026 Hallmark MediaHallmark Media
Risteárd Cooper, Adam Fergus Credit: ©2026 Hallmark MediaHallmark Media
Risteárd Cooper, Tamera Mowry-Housley Credit: ©2026 Hallmark MediaHallmark Media
Credit: ©2026 Hallmark MediaHallmark Media
Adam Fergus, Tamera Mowry-Housley Credit: ©2026 Hallmark MediaHallmark Media
Adam Fergus, Tamera Mowry-Housley Credit: ©2026 Hallmark MediaHallmark Media
Tamera Mowry-Housley Credit: ©2026 Hallmark MediaHallmark Media
Ciara Gallagher Credit: ©2026 Hallmark MediaHallmark Media
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