If Violet’s crumbling mansion in Echo and River West’s inexplicable pull hooked you, you’ll sink into The Wicked Deep. Penny Talbot lives in a fog-swept harbor where a long-ago drowning curse returns each summer, possessing local girls and drowning local boys. Like River’s eerie "glow" that warps Echo, the magic here is alluring and unexplained—more rumor and tide than rules. As Penny falls for the outsider Bo Carter, secrets twist the romance into something as dangerous as the sea, echoing Violet’s uneasy attraction to River amid the town’s mounting dread.

You loved how Echo’s everyday coastal gloom tipped into the supernatural once River rented Violet’s guesthouse. In The Raven Boys, the Virginia town of Henrietta hums with ley line magic as Blue Sargent meets Gansey, Ronan, Adam, and Noah and joins their obsessive hunt for a sleeping Welsh king. The strangeness—just like River’s effect on Echo—seeps through forests, back roads, and whispered legends, with friendships and fragile romances simmering under the surface.

If River West’s beautiful lies and moral slipperiness kept you turning pages, The Coldest Girl in Coldtown offers that same electric unease. After a massacre at a party, Tana ends up traveling with the dangerously magnetic vampire Gavriel toward the quarantined city of Coldtown. Like Violet’s pull toward River despite the chaos gripping Echo, Tana’s attraction to Gavriel is a dare—each revelation about who he is (and what he wants) makes the stakes sharper and the choice darker.

If the moody, lyrical voice of Violet narrating life in Citizen Kane made Echo feel haunted even before the horrors started, The Accident Season will enchant you. Cara and her family brace each October for mysterious injuries and tragedies, as secrets and obsessions tangle in damp fields and abandoned houses. The writing has the same velvety, dreamlike quality—romance and menace braided together—that made Violet and River’s seaside story feel like a spell you couldn’t shake.

If you were drawn to Violet and River’s fraught attraction unfolding in a cliffside town swallowed by whispers and fear, House of Salt and Sorrows delivers that same stormy rush. Annaleigh Thaumas lives in a manor by the sea where her sisters keep dying, and a mysterious stranger complicates grief with desire. As masked balls and midnight visions escalate, the romance blooms amid rot and rumor—much like Violet’s feelings in Echo as danger closes in.