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The Marlow Murder Club – Season 3, Episode 1 The Queen of Poisons: Part One

Play trailer The Marlow Murder Club – Season 3, Episode 1 The Queen of Poisons: Part One Aired Mar 18, 2026 Mystery & Thriller Crime Play Trailer Watchlist
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Retired archaeologist and crossword setter Judith Potts believes that a brutal murder has taken place in the sleepy town of Marlow; when the police refuse to believe her story, she kicks off a private investigation with two unlikely friends.

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Cast & Crew

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Robert Thorogood

Creator

Samantha Bond

Judith Potts

Jo Martin

Suzie Harris

Cara Horgan

Becks Starling

Natalie Dew

Tanika Malik

Phillipa Peak

Liz Curtis
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The Marlow Murder Club — Season 3, Episode 1

The Marlow Murder Club The Marlow Murder Club The Marlow Murder Club View more photos

Episode Info

Synopsis Retired archaeologist and crossword setter Judith Potts believes that a brutal murder has taken place in the sleepy town of Marlow; when the police refuse to believe her story, she kicks off a private investigation with two unlikely friends.
Director
Steve Barron
Creator
Robert Thorogood
Executive Producer
Alison Carpenter
Network
PBS
Rating
TV-14
Genre
Mystery & Thriller, Crime
Original Language
British English
Release Date
Mar 18, 2026