Jump to ratings and reviews
Rate this book
Rate this book
Gareth & Gwen are called to protect the future King of England … May 1144. Newly wedded, Gareth and Gwen travel across the border into England on a diplomatic mission with Prince Hywel of Wales. Within moments of their arrival, however, the mission goes awry and a murder case drops (literally) at their feet. Hindered at every turn by a climate of civil war and constantly shifting political alliances, Gareth and Gwen race to solve the murder and expose a plot that threatens not only their lives, but the life of the future King of England himself. Murder, intrigue, and treachery take center stage in The Fourth Horseman , the third Gareth & Gwen Medieval Mystery.

349 pages, Hardcover

First published May 25, 2013

213 people are currently reading
463 people want to read

About the author

Sarah Woodbury

165 books754 followers
With over a million books sold to date, Sarah Woodbury is the author of more than forty novels, all set in medieval Wales. Although an anthropologist by training, and then a full-time homeschooling mom for twenty years, she began writing fiction when the stories in her head overflowed and demanded that she let them out. While her ancestry is Welsh, she only visited Wales for the first time at university. She has been in love with the country, language, and people ever since. She even convinced her husband to give all four of their children Welsh names.

Sarah is a member of the Historical Authors Fiction Cooperative (HFAC), the Historical Novel Society, and Novelists, Inc. (NINC).


She makes her home in Oregon.

Ratings & Reviews

What do you think?
Rate this book

Friends & Following

Create a free account to discover what your friends think of this book!

Community Reviews

5 stars
394 (43%)
4 stars
368 (40%)
3 stars
120 (13%)
2 stars
18 (1%)
1 star
3 (<1%)
Displaying 1 - 30 of 52 reviews
Profile Image for Petra.
1,246 reviews38 followers
May 27, 2022
Each book of this series brings more to light about our main characters, which makes them more interesting yet. I like how their characters, integrity, life choices and thoughts are revealed to us a little at a time, like getting to know a friend and growing closer. These people become more real to the reader with each book of this series.

I enjoy how these stories follow the general flow of actual history, with the insertion of real people. It's a nice blend of history and fiction.

The mysteries are fun, interesting and convoluted. The story of The Fourth Horseman is more convoluted and twisted than the first two books, which made it very intriguing.

I am really liking this series.
Profile Image for Audrey.
1,783 reviews81 followers
June 1, 2025
In The Fourth Horseman, Sarah Woodbury delivers a compelling blend of historical intrigue and mystery. Set in May 1144, newlyweds Gareth and Gwen accompany Prince Hywel of Wales on a diplomatic mission to England. Their arrival is marred by a shocking murder—literally dropping at their feet—plunging them into a web of political treachery during the civil war between Empress Maud and King Stephen.

Woodbury masterfully intertwines real historical figures and events with fictional storytelling, creating a rich tapestry of medieval life. The protagonists' investigation uncovers a conspiracy that threatens not only their lives but also the future of the English crown.

The narrative is both clean and engaging, free from explicit content, making it accessible to a broad audience. Fans of historical mysteries will appreciate the intricate plot and the authentic portrayal of 12th-century England.
Profile Image for Susan.
7,301 reviews69 followers
December 18, 2017
In 1144, newly wedded Gareth and Gwen are in the entrouge of Princes Hwyel and Rhun on their vist to Newcastle-upon-Lyme. On a diplomatic mission to Duke Robert, the brother to the Empress Maud of England. Within minutes of arriving at the castle they are greeted by a body pushed over the walls landing at their feet. They are given leave to investigate.
An enjoyable well-written mystery and I look forward to reading the next in the series.
Profile Image for Diane.
709 reviews
March 13, 2025
Princes Rhun and Hywel, newlyweds Gareth and Gwen, Evan and Gruffyrd are in Newcastle-under-Lyme to see Earl Robert. When they arrive, a man is pushed from a tower to land at their feet. His name is David and it turns out that not only is he Ranulf’s man (Robert’s son-in-law), but Hywel knows him as his father, Owain’s, man. So Gareth begins his investigation. Another body is found, then the body of a woman and the suspect is known to be Empress Maud’s man, but is now considered a traitor. The more Gareth and Gwen investigate, the murkier the investigation becomes. At Newcastle, they run into Mari, who is there with her uncle, Lord Goronwy. And there is a growing attraction between Hywel and Mari. And to make matters worse, someone is planning to kill Prince Henry, Maud’s ten-year-old son.
Profile Image for Erik Sapp.
529 reviews
March 17, 2019
First, I would recommend reading a little about the time period when this book is set (The Anarchy). The first part of the book was confusing until I looked up who the players were.

Even once I worked that out, though, there were too many characters. It was difficult to keep track of who the Normans were, and how everyone was connected. (The Welsh were easy to keep track of.) The story was good, but kept getting lost in all the names

I've liked this series, and will continue to read the books.
Profile Image for Tracey.
Author 15 books17 followers
August 30, 2020
The Fourth Horseman

Gwen and Gareth have accompanied Princes Rhun and Hywel to Newcastle, but I'm their arrival a body quite literally drops at Gwen's feet and the couple find themselves plunged into a difficult and dangerous investigation.
The Fourth Horseman is another brilliant book by Sarah Woodbury. The story line is gripping and the characters are stronger than ever. It is well written and hugely enjoyable.
Highly recommended.
Profile Image for Voirrey.
785 reviews8 followers
March 4, 2017
A more complicated book that the earlier ones - but none the worse for that :)

Interesting to see Rhun and Hywel, and Gareth and Gwen, out of their comfort zone, and at times their depth, in the complications, machinations, and intrigues of the English nobles in the civil war between rivals for the English throne.
155 reviews3 followers
November 29, 2022
Lots of fun

This 3rd book (4th, if you count the short prequel) in the Gareth & Gwen series is much like the earlier episodes. The series takes place in a time of upheaval in England, giving our Welsh heroes plenty of adventures to get into. The mystery is satisfying, the historic setting believable, and the characters interesting.
Recommended.
Profile Image for Susan.
2,239 reviews19 followers
September 5, 2025
Gareth and Gwen ride along with the Welsh princes to Newcastle where they get involved in an investigation complicated by the brutal civil war between King Stephen and Empress Maud. At the time, gemstones are very rare in Britain. So, when Gwen finds an emerald sewn into the clothes of a murder victim, she comes into possession of a dangerous secret.
55 reviews1 follower
December 11, 2025
Another Really Good One

Soooo glad to have found this series, I am just loving it. Good character development with each story and they are both believable and likable. Good story here, too. And not matter whether I read historical fiction or actual history, Maud really was vile.
Profile Image for Sian Iola Percival.
103 reviews
December 13, 2018
Another great book in the series, giving a nice insight into the Saxon/Norman side of things and not just the welsh. As with the others i did not see that being the end of the story, but I did guess a few things that turned out true. Well worth reading.
Profile Image for Ron Nurmi.
573 reviews4 followers
August 30, 2021
The best of her first three Gareth & Gwin Mysteries with better storytelling and deeper characters. Looking at the Anarchy period of English History when Stephen and Matilda contested the crown of England. If you like the period of medieval Wales this is a good book.
Profile Image for Alayne.
2,480 reviews7 followers
April 20, 2023
A twisty and complicated story which I found very difficult to put down! I love the relationship between Gwen and Gareth, and also between them and Prince Hywel, and their solving of mysteries together makes for terrific stories. Sarah Woodbury writes very well. Highly entertaining.
1 review
May 18, 2024
I loved it!

Easy reading. Enjoyable story lines. But what ie joyed the most was how clean it was. No foul language and it wasn’t full of immorality. I really really enjoy this author.
Profile Image for Bonnie.
2,371 reviews8 followers
June 14, 2017
This was an enjoyable mystery without explicit sex or violence. The history it illuminates is interesting.
637 reviews5 followers
May 23, 2018
A bit more complex plot this time but enjoyable as always. looking forward to reading the next one.
Profile Image for Pat Welte.
812 reviews7 followers
June 2, 2018
I am really enjoying this series with the medieval times and suspense, murder, romance and all the exciting stories.
Profile Image for Meredith.
441 reviews5 followers
November 3, 2019
I still enjoy the characters and settings but found this book to be a little more confusing than the other Garett and Gwen books.
9 reviews
Read
March 21, 2020
I have thoroughly enjoyed this series and would recommend it to anyone looking for that hard-to-put-down book.
Profile Image for Patricia.
2,958 reviews17 followers
April 22, 2020
I am so enjoying this series. Then, I think I need to take a break and read something else (a palate cleanser) and come back to enjoy book 4.
Profile Image for Kelly.
119 reviews
June 14, 2020
I found Sarah Woodbury earlier in the year & am devouring all the Gareth & Gwen novels. They keep you guessing & are well written!
Profile Image for Barbara Carter.
462 reviews20 followers
July 30, 2020
Thoroughly enjoyed!

This novel of history, mystery & intrigue! Following the exploits of Gwen & Gareth has been fun. Read and enjoy. Just try not to buy the next installment.
Profile Image for CK DesGrosseilliers.
23 reviews2 followers
November 3, 2020
I wanted to like it; I’ve liked other books by the author. The plot was overly complicated and required too much telling by the characters to make sense of it.
Profile Image for Janice Carico.
73 reviews
January 29, 2021
Good murder historical murder mystery with lots of twists and turns and a little romance
Profile Image for Angela Rollins.
7 reviews1 follower
August 11, 2021
Book 3! Wow! The plot and characters are amazing! It kept me gripped till the end and oh my! I love the ending and it fitted well and was very satisfying.
Displaying 1 - 30 of 52 reviews

Can't find what you're looking for?

Get help and learn more about the design.