Summer YA Thrillers that Dive into Dangerous Waters

Take a dive off the deep end and into these summer YA thrillers! But we must warn you, if you continue into the depths of these pages, you might get swept away by uncharted mysteries.

Seasick by Kristin Cast and Pintip Dunn

Seasick

Seasick

There’s a killer on board a luxury yacht, and two former friends must team up to figure out which of their privileged classmates has a penchant for murder before they become victims themselves. Don’t miss out on this gripping thriller from New York Times bestselling authors Kristin Cast and Pintip Dunn!

Liar’s Beach by Katie Cotugno

Liar's Beach

Liar's Beach

The New York Times bestseller!

A new take on Agatha Christie’s classic murder mystery The Mysterious Affair at Styles, with iconic detective Hercule Poirot recast as a brilliant, brash teen girl named Holiday, and narrated by her childhood friend Linden, an athlete-scholar who fits right in at his elite prep school—all the while hiding some secrets of his own.

Those We Drown by Amy Goldsmith

Those We Drown

Those We Drown

An ocean-drenched, atmospheric horror debut! Liv’s best friend disappears on their first night aboard their dream semester-at-sea program—but is he really sick, like everyone says, or is something darker lurking beneath the water?

The Cousins by Karen M. McManus

The Cousins

The Cousins

#1 NEW YORK TIMES BESTSELLER • From the bestselling author of One of Us Is Lying comes your next obsession. You’ll never feel the same about family again.

We Were Liars Series by e. lockhart

We Were Liars Boxed Set

We Were Liars Boxed Set

Discover the TikTok phenomenon with this not-to-be missed paperback boxed set featuring the #1 New York Times bestsellers We Were Liars and Family of Liars!

Girl Overboard by Sandra Block

Girl Overboard

Girl Overboard

This fast-paced thriller about a girl who investigates her friend’s disappearance during their cruise ship vacation is Ruth Ware’s The Woman in Cabin 10 for teens—and it’s a paperback original!

Cursed Cruise by Victoria Fulton and Faith McClaren

Cursed Cruise

Cursed Cruise

From the authors of Horror Hotel, called “fast-paced and freaky” by #1 NYT bestselling author Kendare Blake, comes another addictive YA horror about a group of teen ghost hunters who are invited to travel onboard a haunted historic cruise ship.

All aboard . . .

Haunting the Deep by Adriana Mather

Haunting the Deep

Haunting the Deep

The delicious horror of Ransom Riggs and the sass of Mean Girls meets Titanic in this follow-up to the #1 New York Times bestseller How to Hang a Witch, in which a contemporary teen finds herself a passenger on the famous “ship of dreams”—a story made all the more fascinating because the author’s own relatives survived the doomed voyage.

Did you enjoy this list of summer YA thrillers that dive into dangerous waters? Discover more thrilling reads here and get social with us at @getunderlined!

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