John Christian Plummer has worked on 16 Hallmark Channel original movies.
| Movie | Premiere | Role | Detail |
|---|---|---|---|
| Mystery Island: House Rules | Sep 14, 2025 | Writer | Writer |
| Mystery Island: Play for Keeps | Aug 17, 2025 | Writer | Writer |
| Mystery Island: Winner Takes All | Mar 13, 2025 | Writer | Writer |
| Five Gold Rings | Nov 7, 2024 | Writer | Writer |
| Mystery Island | Sep 29, 2023 | Writer | Writer |
| Curious Caterer: Grilling Season | Feb 5, 2023 | Writer | Writer |
| Francesca Quinn, PI | Sep 25, 2022 | Writer | Writer |
| Curious Caterer: Dying for Chocolate | Apr 10, 2022 | Writer | Writer |
| Mystery 101: Deadly History | Aug 1, 2021 | Writer | Writer |
| Mystery 101: Killer Timing | Mar 21, 2021 | Writer | Writer |
| Mystery 101: An Education in Murder | Mar 29, 2020 | Writer | Writer |
| Riddled with Deceit: A Martha's Vineyard Mystery | Feb 23, 2020 | Writer | Writer |
| Mystery 101: Dead Talk | Sep 22, 2019 | Writer | Writer |
| Mystery 101: Words Can Kill | Sep 15, 2019 | Writer | Writer |
| Mystery 101: Playing Dead | Jun 23, 2019 | Writer | Writer |
| Mystery 101 | Jan 27, 2019 | Writer | Writer |