Haunted Harmony Mysteries
A music teacher in Ireland solves murders with help from a ghost.
4 films · 2023–2026 · Mystery
Start with the first filmMovies in viewing order
Watch Murder in G Major first, then Buried at C, Key to the Castle and Prelude to a Wedding. The first film explains how Gethsemane meets Eamon. Their later investigations make more sense once that relationship is established.
Your viewing checklist
Saved films and watched progress stay separate in this browser.- 01
Film 1 · 2023
Haunted Harmony Mysteries: Murder in G Major
Film sourceGethsemane discovers a ghost in her home after taking a teaching post in Ireland. She investigates his death in the hope of helping him move on. Begin here for the rules of their partnership.
- 02
Film 2 · 2025
Haunted Harmony Mysteries: Buried at C
Film sourceA sea captain's unexplained death gives Gethsemane and Eamon a fresh investigation. The second film is the point to continue once you know how a teacher and a ghost work together.
- 03
Film 3 · 2026
Haunted Harmony Mysteries: Key to the Castle
Film source · Premiered 30 May 2026A television ghost hunter arrives in town, then the host dies. Gethsemane and Eamon investigate a case in which the victim becomes a new spirit needing help to cross over.
- 04
Film 4 · 2026
Haunted Harmony Mysteries: Prelude to a Wedding
Film source · Premiered 5 September 2026Gethsemane accepts an invitation to perform at a wedding, but a bridal-party death draws her and Eamon into another investigation. Her musical work supplies the connection to the people involved.
About the series
Gethsemane Brown arrives to teach at an Irish school and finds that her new home already has an occupant: Eamon, a ghost who needs her help. Tamera Mowry-Housley and Risteard Cooper lead a series where a murder victim can become an investigating partner. Start with Murder in G Major to understand that unusual arrangement before joining them on the later cases. The musical titles follow Gethsemane's work into the mysteries.
What to expect
Expect a schoolteacher with a supernatural source of help, rather than a case that merely takes place in a house rumoured to be haunted. Music and local events bring Gethsemane into new investigations. Eamon remains central as the cases move from his own past to deaths elsewhere in the community.
The people who bring it to life
Gethsemane Brown
The music teacher whose new life in Ireland includes a ghost and a murder investigation.
More cast and guest appearances 18
- Marco Grazzini4 films
Griff
- Adam Fergus3 films
Inspector O'Reilly
- Julie Lamberton3 films
Siobhan
- Darragh O'Toole1 film
Billy
- Robert Mitchell1 film
Jackson
- Frankie McCafferty1 film
Coroner Craig
- Ben Condron1 film
Seamus
- Fiach Kunz1 film
Pierce
- Luke Griffin1 film
Kent Dempsey
- Maia Frantova1 film
Matti
- Fianna Nolan1 film
Shannon
- Sarah Gallagher1 film
Ciara Gordon
- Sean Hughes1 film
Rian Byrne
- 1 film
- Aidan Redmond1 film
Ed James
- Jennifer Laverty1 film
Deirdre
- Gerry O'Brien1 film
Captain MacLachlan
- 1 film
Inside the series
The ghost is part of the team
Eamon is a continuing character, not simply a rumour to disprove. Begin with his introduction if that is the part of the premise that interests you.
Music supplies more than the titles
Gethsemane teaches music, and Prelude to a Wedding brings her to the celebration as a performer. Her work gives her a reason to enter the case.
What to watch next
A few more answers
Are the ghosts real within the story?
Yes. Gethsemane's partnership with Eamon is the premise. These are supernatural mysteries rather than stories built only around rumours of a haunting.
Can I start with Prelude to a Wedding?
Its wedding investigation is a later case. Murder in G Major is the better introduction because it explains why Gethsemane can work with Eamon.
How many released films are included?
Four films are included through September 13, 2026, ending with Prelude to a Wedding. Future titles are not part of this released sequence.
Sources & guide notes
Sources checked 13 September 2026. The film count follows the sequence above. Viewing options depend on your country.
Premiere date notes
Haunted Harmony Mysteries: Murder in G Major. Officially numbered Movie #1.
Haunted Harmony Mysteries: Buried at C. Officially numbered Movie #2.
Haunted Harmony Mysteries: Key to the Castle. Official original airdate May 30, 2026. Direct page says Streaming Now.
Haunted Harmony Mysteries: Prelude to a Wedding. Official original airdate September 5, 2026. Direct page says Streaming Now.
- Hallmark Channel Haunted Harmony Mysteries guide
- Hallmark Channel Haunted Harmony Mysteries guide
- Hallmark Channel Haunted Harmony Mysteries guide
- Hallmark Channel Haunted Harmony Mysteries guide
- Hallmark Channel Haunted Harmony Mysteries guide
- Film synopsis and cast reference
- Film synopsis and cast reference
- Film synopsis and cast reference