Emily is having the time of her life—she's in the mountains of Chile with her best friend, Kristen, on their annual reunion trip, and the women are feeling closer than ever. But on the last night of their trip, Emily enters their hotel suite to find blood and broken glass on the floor. Kristen says the cute backpacker she'd been flirting with attacked her, and she had no choice but to kill him in self-defense. Even more shocking: The scene is horrifyingly similar to last year's trip, when another backpacker wound up dead. Emily can't believe it's happened again—can lightning really strike twice?

Back home in Wisconsin, Emily struggles to bury her trauma, diving head-first into a new relationship and throwing herself into work. But when Kristen shows up for a surprise visit, Emily is forced to confront their violent past. The more Kristen tries to keep Emily close, the more Emily questions her friend's motives. As Emily feels the walls closing in on their coverups, she must reckon with the truth about her closest friend. Can she outrun the secrets she shares with Kristen, or will they destroy her relationship, her freedom—even her life?

We Were Never Here is a gripping, thought-provoking thriller about two ride-or-die best friends who meet up once a year for an epic travel adventure. It's a special kind of friendship: Even though Emily lives in Wisconsin, and Kristen lives in Australia, they are committed to each other. Committed enough that, when tragedy strikes, they're willing to help the other person cover up a dead body—not once, but twice. They share these secrets because they know they can trust each other. If they both keep their mouths shut, they’ll both be safe.

But what if one of them starts behaving oddly? What if, suddenly, they start doubting the other person? What happens if they lose that trust?

I devoured this novel in a handful of sittings. I was desperate to know what was going to happen to Emily and Kristen, and whether they would crack under pressure, especially as the police started digging deeper. But I was also transported by the evocative settings: the high desert of Chile, the humid cliffs of Cambodia. In these far-flung places, nobody knows them. Emily and Kristen can be whoever they want to be; they can do whatever they want to do. Andrea Bartz beautifully captures the freedom, and also the danger, that comes from this kind of anonymity.

This is the perfect summer read: a smart, twisty thriller about dreamy vacations that turn into nightmares.