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A Sadie Gray FBI Mystery #4

The Murder Society: A Sadie Gray FBI Mystery Series

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“Loved the humor between these partners, plus the cases they solve are very intense, its hard to put down these books!” – Amazon Review of the series from The Sight Unseen

The face of a murderer, saying your name, adding you to the kill list…

When Sadie Gray worked her last assignment, she never expected that the end of one case would rocket her right into the next, but then the creep said her name, told her she was on his list.

When Sadie and Brad are pulled into several murders, all seemingly related to an online group called The Murder Society, the game of cat and mouse becomes one of survival, for the hacker known only as “Monster” is throwing bodies at them, but he’s also tearing through Sadie’s private life.

Can Sadie keep her head while everything falls apart, or will she be the next victim claimed by a mastermind group of psychopaths and sadistic killers? She and Brad must move quickly, because the bodies are piling up fast, and Monster is closing in on Sadie even faster…

From its heart-stopping beginning to its blistering finish, The Murder Society—the fourth Sadie Gray FBI thriller from USA Today Bestselling Authors R.B. Schow and Bailey James—proves that once you're on a determined killer's radar, it'll take an entire team of the Bureau's best and Sadie's skills to find him, stop him, and put him down if need be.

Fans of Mary Stone, A.J. Rivers, Elle Gray, Lisa Regan, Alex Sigmore, and LT Ryan are going to love Sadie Gray and this wild, thrilling ride—a crazy, addictive new mystery series.

Scroll up, grab your copy now, and prepare for a story like no other!

246 pages, Kindle Edition

Published February 20, 2025

1188 people are currently reading
179 people want to read

About the author

R.B. Schow

20 books52 followers

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5 stars
620 (64%)
4 stars
271 (28%)
3 stars
56 (5%)
2 stars
6 (<1%)
1 star
3 (<1%)
Displaying 1 - 25 of 25 reviews
Profile Image for Tanya.
64 reviews
April 6, 2025
I actually really had fun with this one. I loved the plot, always love it when the MC is the target, makes it really interesting.

Cassius *sigh*

Brad remains the man I am routing for the most, and now I'm worried Sadie and him won't be partners forever, I hope they can stay partners somehow when he gets in the BAU possibly or they at least keep in contact somehow....maybe if he's in the BAU him and Sadie can be together since they wouldn't be partner's anymore and that's mainly what's stopping them?

Also, the twist on the killer got me, really wasn't expecting that.

Looking forward to seeing how the next book goes, especially with the next case. And hopefully we don't lose Brad, but it will be interesting to see Sadie work alone.
62 reviews1 follower
March 31, 2026
Beyond fiction, minimally entertaining

I just finished book 4 in this series and honestly had to skim through the last 70 pages or so to get to the end. If I was in law enforcement I would guess this series is as frustrating as watching "realistic" medical shows - my speciality and knowing all the lack of realism. It's bad enough in these times we have an entire generation that has somehow skipped respect to entitlement- and reading this behavior in a so called (but beautiful) FBI agent is disheartening. Truly disappointed as I think this series has potential but clearly not my type of read.
Profile Image for Robin Reviewer.
1,049 reviews11 followers
February 25, 2025
A little disappointing- read on KU

I really enjoyed the first three books, but found this one a little disappointing. Almost all of the investigating was done by forensics and the cyber group. All of the books have been a little light on investigation, but this one was worse.

In addition, Sadie seemed a little extra obnoxious. The FBI was stupid in how they handled one issue. I won't state what as to not spoil it.

The last 20% or so saved the book from being a total loss. I hope the next one is better.
176 reviews1 follower
October 18, 2025
Murder Club,inventive idea

Really enjoyed the inventive way the murder club used to kill those they had resentments against. Also thought Tyler and his tracking of information informative and so interesting. He was a learning experience for me.
I would have liked it better if it didn't seem to be confused as to weather it wanted to be a relationship story or a murder mystery.
Sadies behavior as an FBI agent was hard to accept. Its hard to accept that the FBI would allow some of this. She is at the point for me where she is getting annoying with her words and behavior.
8 reviews
October 27, 2025
SPOILER: Didn’t care for how the heroine’s loss of virginity was written. For me, it wasn’t very clear. she was a virgin until almost the moment. The guy saying he didn’t know? Really?? No evidence on the sheets? And taking her ‘love’ interest to a cabin in the woods where certainly you knew the killer would find them was questionable. While there was much more to this book than that scene, that storyline seems such a pivotal part of the character’s growth. It came across forced. Just ick all the way around.
This entire review has been hidden because of spoilers.
Profile Image for Solange.
8 reviews1 follower
February 25, 2026
Well, it wasn’t as bad as the last one. The plot thickens in the last 10% of a book, and it felt like we also only got 10% insight into the killers motives. Thinking back to a sight unseen and how much we learned about that antagonist makes the lackluster development of the killer across two books feel disappointing. I second other reviewers comments on the nature of Sadie’s relationship endeavors at this point in her story.

I am still reading though. Still taking a shot every time someone pees themselves, as the author still seems to be really into that.
1,747 reviews1 follower
July 21, 2025
This series is addictive, you just don't think the next book will outdo the previous book and it goes and blows you out of the water. The characters are adversarial and have a love hate relationship while the plots are complex and have just enough twists and turns to keep you turning the pages. Once you start, it is hard to put these books down.
7 reviews1 follower
December 9, 2025
Didn't see this coming

Sadie is maturing as an FBI agent without losing her smart mouth. The dialog is so fast and unexpected it eases any tension built up from the horrendous criminals they face. Learned much about the way cyber and AI can be used. Did not see the end coming. If you have read the first 3 you know the violence can be descriptive. A book you can't put down.
Profile Image for Teri Ceola.
32 reviews
March 12, 2026
This is the 4th in the series and each one hooks you from beginning to end. I found myself so invested in the lives of Sadie and Brad and Cassius and of course the Boston Terrier Droolius Ceaser! There is gruesome crime that will make your stomach churn so if you can get past that the story lines are very well written as are the characters
23 reviews6 followers
February 21, 2025
good, better, best

Just when you think a book can’t get any better, it does. Don’t miss a single book from this author. I promise you won’t be sorry. You may have a nightmare or ten though.
Profile Image for Sherry.
91 reviews
March 15, 2025
So glad I found this author. He keeps you enthralled and captivated with everything he writes…I love this series, It just gets better and better with each new book. A must read for sure. You will be hooked and anxious for the next book.
Profile Image for Karen Devine.
696 reviews2 followers
April 16, 2025
So action packed!

The writing is stellar! The characters are well written and the story keeps you hooked! Sadie Gray has quite a way of serving justice, Cassius needs to help her moral compass along with Brad.
232 reviews
Read
April 21, 2025
Apple

This is an "oh ,no, not again story. You feel that she just can't get a break. Don't expect any warm fuzzy moments in this story just action. If you read till the end you will understand the title.
9 reviews
July 4, 2025
Sadie Gray series

I really enjoyed reading this series of murder mysteries.. The character's all are relatable and keep the read interesting.. I found myself looking forward to the next book
24 reviews
March 13, 2026
Gritty. Big personal reveal toward the end could had been elaborated on more. Additionally, the twist about the Monster - saw it coming.
Still find the series entertaining. Sadie is a sassafras - that’s for sure.
Profile Image for Richard Osborn.
33 reviews5 followers
May 12, 2025
Great story!

I'm hooked on FBI mystery thrillers. Ryan Schow is a great writer and I will read anything he publishes. Thanks!!!
Profile Image for Red.
514 reviews8 followers
September 29, 2025
Addictive reading

This is the 4th book I've read in this series. They are totally addictive and making me spend too much time reading. Can't wait to get the next one.
Profile Image for Breia.
1,086 reviews33 followers
October 2, 2025
Cassius....
Sadie is such a bad ass. Can't wait to see what happens next.
1 review
January 1, 2026
Sadie Gray 4

I enjoy this series so far. Keeps you guessing and pulls you in. I had a great reading year with 30 books 📚
Profile Image for Fabian.
38 reviews6 followers
January 6, 2026
Too many F-Bombs!

The F-Bombs are too frequent in the last two books, and I hope they taper off. Too degrading for a first class Sadie Gray novel. They are lowering your dialogue.
503 reviews2 followers
January 25, 2026
Pretty good book but not quite a 5 for me. Had to quit for a couple,e days to read another book and came back to finish in one day.
265 reviews1 follower
January 25, 2026
Excellent

Wow, this is great writing. I really enjoy the complicated cases , characters, and stories in the Sadie Gray series.
7 reviews
February 8, 2026
Disappointment

Could not believe the decision Sadie made or the total darkness of this book, will be reading no more of this series
4 reviews
February 14, 2026
The 4th

To me it took a long Tim to really get me into this one. There was way too much chit chat that was a put off for me. Then finally it got my attention. Great ending.
12 reviews
March 23, 2026
so worth reading!

Great book like all the others in this series. I can’t wait to read all the books so far. 👍🏼
Displaying 1 - 25 of 25 reviews