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Doctor Who: Halloween - Sea Smoke and Other Stories

Merlin's Trap (Season 1, Episode 4)
Podcast Episode
When Lainey leads an expedition into the ancient Merlin's Cave System, the group is warned by Merlin's ghostly voice to explore no further. As Lainey and her team push deeper into the mysterious cave, they encounter things far beyond their...See moreWhen Lainey leads an expedition into the ancient Merlin's Cave System, the group is warned by Merlin's ghostly voice to explore no further. As Lainey and her team push deeper into the mysterious cave, they encounter things far beyond their comprehension, including Merlin himself. Written by Big Finish Productions See less
Read more: Plot summary
Director
Samuel Clemens
Producer
Noga Flaishon (producer)
Composer
Howard Carter
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Status
Edit Released
Updated Oct 30, 2025
Release date
Oct 30, 2025 (United Kingdom)

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Cast

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5 cast members
Name Known for
Jon Culshaw primary photo
Jon Culshaw
The Twelfth Doctor (voice) The Twelfth Doctor (voice)   See fewer
Dead Ringers (2002)
Kymberley Cochrane primary photo
Kymberley Cochrane
Flo / Woman (voice) Flo / Woman (voice)   See fewer
A Blind Play of Social Forces (2022)
Lucy-Jane Quinlan primary photo
Lucy-Jane Quinlan
Lainey (voice) Lainey (voice)   See fewer
Tucked (2018)
Robyn Cooper primary photo
Robyn Cooper
Alice (voice) Alice (voice)   See fewer
But... Sometimes (2017)
Antony Jardine primary photo
Antony Jardine
Ezra (voice) Ezra (voice)   See fewer
Making It (I) (2015)
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