Blood in the Water

 
4.5 (2)
 
5.0 (1)
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Publisher
Age Range
9+
Release Date
July 01, 2025
ISBN
978-1338849912
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Mega bestselling and award-winning author Tiffany D. Jackson (The Weight of Blood; White Smoke) makes her thrilling middle-grade debut with a can't-put-it-down murder mystery set on Martha's Vineyard. R.L. Stine, bestselling author of Goosebumps, says, "Don't miss this one!"
This summer, beware of sharks...
Brooklyn girl Kaylani McKinnon feels like a fish out of water. She's spending the summer with family friends in their huge house on Martha's Vineyard, and the vibe is definitely snooty. Still, there are beautiful beaches, lots of ice cream, and a town full of fascinating Black history. Plus a few kids her age who seem friendly.
Until the shocking death of a popular teenage boy rocks the community to its core. Was it a drowning? A shark attack? Or the unthinkable--murder?
Kaylani is determined to solve the mystery. But her investigation leads her to uncover shocking secrets that could change her own life as she knows it... if she survives.
New York Times bestselling author Tiffany D. Jackson makes her thrilling middle-grade debut with this heart-pounding mystery packed with twists and turns that will keep readers guessing until the end.

Editor reviews

2 reviews
Blood in the Water
(Updated: June 12, 2026)
Overall rating
 
5.0
Plot
 
5.0
Characters
 
5.0
Writing Style
 
5.0
Illustrations/Photos (if applicable)
 
N/A
Kaylani McKinnon doesn't want to leave Brooklyn for a summer visit to Martha's Vineyard. Her father is in prison for embezzling from his employer, and Kaylani knows he's innocent. She has an offer to live in a mansion on the island with the wealthy Watson family, her father's former employers. Once on the island, a murder occurs, and Kaylani is swept into figuring out what really happened. Little by little, Kaylani finds not all is what it seems, including the family she's staying with. Her investigation starts turning up things that might have links to not only the murder but also her father's imprisonment. But if she's not careful, she might be next.

What worked: Engaging diverse mystery, suspense set on Martha's Vineyard. I'm a huge fan of Tiffany Jackson's YA novels, and her latest middle-grade novel doesn't disappoint!

Kaylani wants to be a lawyer when she's older, and it's those skills she uses to help find out who murdered Chadwick, someone who used to date Cassie Watson, the daughter of the family Kaylani is staying with. Kaylani senses something isn't right, and with the help of Miles, Chadwick's younger brother, she searches for what really happened.

There's many clues woven throughout and a cast of characters that are multi-layered in their complexity. London and Kaylani were best friends when they were younger, and the 'new' London is a bit of a snub. But there are cracks in her armor when she is around Kaylani. I liked Miles and Kaylani working together. Their friendship helps Kaylani, especially after all her family went through when her father was put in prison.

I 'get' why Kaylani wouldn't want to go to the island, even if it meant going to a mansion for the summer. Her father's imprisonment is something she knows is wrong. Once on the island, though, she uses her sharp mind to put pieces of a murder mystery together.

I also liked some of the history of Blacks in Martha's Vineyard. I wanted to know more!

Loved the cover, which is evocative and gives a middle-grade Jordan Peele meets Goosebumps horror feel.

Great summer, Who Done It, with a diverse cast of characters.
Good Points
1. Great summer, 'Who Done It'
2. Diverse
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Murder on Martha's Vineyard
(Updated: June 12, 2026)
Overall rating
 
4.0
Plot
 
4.0
Characters
 
4.0
Writing Style
 
4.0
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Kaylani doesn't want to leave her mother or her Brooklyn home to go spend a month with family friends, the Watsons, on Martha's Vinyard, but she isn't given much of a choice. She'd rather stay home and work on her father's appeal, since he is spending time in prison after being framed for embezzling funds while working at the Mercer Hedge Fund. The Watsons are big supporters of her father, having helped him go to college, so they want to allow Kaylani to have a vacation to take her mind off her troubles. Sadly, since their granddaughter London, and her older sister Cassie, aren't too thrilled to have Kaylani around, it's not that appealing a break. The girls go to an elite private school in Connecticut, and won't even hang out with the local residents. They are a bit enamored of Chadwick, whom Cassie dated last year, but it's an uneasy relationship. For his part, Chadwick is very kind to Kaylani, and even gives her a tour of the Watson's house and its history, and suggests that she looks into the life of the previous owner, Alice McBride. When London demands to tag along to a late night beach party with Cassie, the girls meet Chadwick's young brother, Miles, and also talk to Jaden, who works for the Watsons. There is bad blood between Jaden and Chadwick, and when the two get into an altercation, Cassie has Jaden drive the younger girls home while she sees if Chadwick is okay. The next day, Chadwick is missing, and his body is later found near the bridge that was featured in the movie Jaws that the teens all jump from. There seems to be a shark bite to his body, and there is a lot of blood in the water. Chadwick's death hits the community hard, but even when it is determined to be a homicide, the kids all still hang out at the beach. Miles wants to investigate, and asks Kaylani for help in finding his brother's phone. Kaylani would like to help, and has found the local history to be very interesting, but because of issues with London and the Watsons, would really just like to go home.
Good Points
While Kaylani has her reasons for wanting to stay at home in Brooklyn, I think that most tweens would embrace the opportunity to travel to Martha's Vineyard and stay at a mansion, complete with an enigmatic housekeeper who is an excellent cook, so having this as the setting of the books is great. There's drama aplenty, with London and herr snotty ways, the mysterious falling out that Chadwick had with the girls, and even some charity embezzlement of which Kaylani is accused. This is also a realistic look at dealing with a parent in prison; oddly enough, one of my childhood friends' fathers was imprisoned for embezzlement! The setting is well defined, and there is a lot of interesting Black history of the area. I don't want to ruin the mystery, but I did like that it cleared up several different issues. It's hard to strike a good balance in a middle grade murder mystery, but this did a good job of having a sympathetic but somewhat remote character killed in a slightly gruesome way. Miles' reaction was also well portrayed.

The cover of this is fantastic; it screams "murder mystery" perfectly, and the mansion in the background is a great touch. Readers who have never been to Martha's Vineyard will want to go after reading this, although they will definitely be cautious! It shouldn't surprise anyone that tweens love murder mysteries, since such a large percentage of adult novels and television shows fall into that category, but it is hard to find a murder mystery that gives young readers what they want without worrying adult gatekeepers.

This is a good choice for readers who like a side of Black history with their mysteries, and have enjoyed Johnson's The Parker Inheritance, Strong's Just South of Home, or Banks' Billions to Burn. While this could have used some further editing, the appeal of the cover is undeniable, and since it is a murder mystery, this book will ALWAYS be in big demand. It reminded me a bit of some of Joan Lowery Nixon's books like her 1987 The Dark and Deadly Pool.
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Great read
(Updated: June 12, 2026)
Overall rating
 
5.0
Plot
 
5.0
Characters
 
5.0
Writing Style
 
5.0
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What starts as a chill summer on Martha’s Vineyard turns into a full-blown mystery when 12-year-old Kaylani finds herself investigating a suspicious death.

It’s got beach vibes, a smart young sleuth, and just the right mix of spooky and real. Tiffany D. Jackson keeps it fun and fast while weaving in deeper themes like race and class.
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