Death in Paradise season 15, episode 3: Who are the guest stars?

Introduction

In Death in Paradise season 15, episode 3, the guest cast steals part of the spotlight just as much as the mystery itself. The cosy crime drama on BBC One once again brought fresh faces to the island of Saint Marie, and long-time fans were buzzing about the new actors joining DI Mervin Wilson’s investigation team. This episode’s mystery involves the death of a quiet island resident, and each guest star adds depth — and plenty of suspicion — to the plot. Some viewers even spotted a big real-life connection on screen, adding to the buzz online.(The Sun)

This article breaks down who the key guest stars were in episode 3, what roles they played, and why their performances matter to the story and fans. Whether you caught the episode on BBC iPlayer or watched it live, keep reading to see the cast details, reactions, and what makes this one stand out in season 15.

Plot Summary of Episode 3

Episode 3 of Death in Paradise season 15 starts off with what looks like a straightforward case — a reclusive pensioner, Henry Ashby, is found shot dead in his home. DI Mervin Wilson and the team quickly zero in on a suspect seen fleeing the scene. But here’s the twist: that suspect has a solid alibi. This sets up a classic Saint Marie conundrum — looks aren’t everything.(TVmaze)

Meanwhile, there’s a bit of tension with Commissioner Selwyn Patterson, who’s trying to launch a community outreach campaign. Mervin’s distraction at that event adds humour and a sense of chaos to the investigation. As clues unfold, every guest character plays a part in making the mystery more complex and fun.(MEMORABLE TV)

Guest Stars & Characters in Episode 3

Here’s a breakdown of the key guest stars and the roles they played in episode 3 of Death in Paradise season 15:

⭐ Siobhan Finneran as Fleur Edwards

Fleur lives next door to the victim Henry and is one of the first people to report seeing someone leave the scene on a white moped. Fleur is chatty and posh, and as the plot unfolds, her statements raise questions about her involvement in the case. Fun fact — she’s played by Happy Valley and Downton Abbey alum Siobhan Finneran. Fans were excited because she appears alongside her real-life partner Don Gilet in the show!(TV Guide)

🕵️ Ben Willbond as Craig Pinnock

Craig is an accountant whose white moped was spotted near Henry’s house. His odd explanation for being there — looking for property in the dark — gives Mervin pause. Willbond brings a quirky energy to the suspect role.(TV Guide)

🌿 Kojo Kamara as Baxter Turton

A friendly gardener who works on Fleur’s property, Baxter seems harmless at first. But when Mervin discovers unusual payments from Henry to Baxter, suspicions grow. Kamara’s role adds another layer to the suspect list and keeps viewers guessing.(TV Guide)

📚 Aneirin Hughes as Henry Ashby

Henry is the murder victim — a quiet man with a love for books and crosswords. His death sets off the episode’s central investigation. Details about his past add intriguing mystery elements to the plot.(TV Guide)

Each of these performances contributes to the puzzle-solving feel of the show and gives the episode depth beyond a standard whodunit.(imdb.com)

Why These Guest Stars Matter

1. Fresh Faces Keep the Show Exciting – New guest actors bring fresh energy to each episode, and that keeps long-time fans engaged.

2. Real-Life Connections Draw Buzz – Siobhan Finneran’s casting alongside her partner generated chatter on social platforms, adding to the episode’s visibility.(The Sun)

3. Character Depth Enhances the Mystery – Each guest role comes with quirks and secrets that help deepen the plot’s complexity.(TVmaze)

4. Acting Variety Adds Tone Balance – Serious crime elements mix with humour and charm, thanks to the cast’s performance range.(imdb.com)

Fan Reactions & Social Buzz

Fans took to social media after the episode aired. One trending reaction was surprise and delight at seeing Siobhan Finneran acting opposite Don Gilet — many fans didn’t know they were a couple off-screen. Other viewers joked about how every character seemed suspicious at some point (classic Death in Paradise vibes!). Hashtags like #DeathInParadise and #DIP15E3 trended with fans debating who the real killer was. Some online polls even named Finneran’s performance a highlight of the episode.(The Sun)

Critics & Ratings Talk

Critics pointed out that the episode balanced drama, humour, and character work well — something Death in Paradise fans have come to expect. Reviews highlighted that the guest cast gave the mystery more emotional weight at times, which helped the episode land well with audiences. Overall, the episode was praised as a solid instalment in season 15.(imdb.com)

Streaming & Release Info

• Death in Paradise season 15, episode 3 aired on BBC One on Monday, February 16, 2026 at 9:00 pm GMT.(TVmaze)

• The episode is available to stream on BBC iPlayer if you missed it live.

• In other regions, the season streams on platforms like BritBox (check local listings).(Tom's Guide)

FAQs

Q: Who guest stars in Death in Paradise season 15 episode 3?
A: The key guest stars are Siobhan Finneran (Fleur Edwards), Ben Willbond (Craig Pinnock), Kojo Kamara (Baxter Turton), and Aneirin Hughes (Henry Ashby). Each character adds twists to the episode’s central mystery.(TV Guide)

Q: Where can I watch Death in Paradise season 15 episode 3?
A: It originally aired on BBC One and can be streamed on BBC iPlayer in the UK. International viewers can check BritBox or similar regional services for availability.(Tom's Guide)

Q: Is the episode mystery connected to the guest cast?
A: Yes — the core mystery revolves around Henry Ashby’s death, and the guest characters each provide clues, red herrings, or motives that drive the plot forward.(TVmaze)

Q: Did fans react positively to the guest stars?
A: Many fans responded positively, especially noting the chemistry between Don Gilet and Siobhan Finneran, and enjoyed speculating about suspects online.(The Sun)

Conclusion

Death in Paradise season 15, episode 3 mixed a classic murder mystery with intriguing guest performances. The cast brought depth, personality, and twists that kept fans guessing. From Siobhan Finneran’s memorable turn — alongside her real-life partner — to the mysterious banker and quiet gardener, this episode delivered the cosy crime charm the show is known for. Whether you’re streaming on BBC iPlayer or catching up on BritBox, this guest-star-heavy episode is worth a watch. If you loved it, share your favourite character moments and predictions in the comments!