Cross My Heart: A Novel
by Megan Collins
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"Cross My Heart by Megan Collins This tempestuous psychological thriller follows Rosie Lachlan, a bridal shop manager with a literal broken heart. Unlucky in love and suffering increasingly from ill health, she undergoes a transplant—after which she develops an obsession with the husband of the dead donor. He’s certainly intriguing: a celebrity author with an exciting online presence. When an anonymous commenter claims he might be implicated in his wife’s tragic death, the plot thickens… The New York Times described it as “a curious book: part (possible) murder mystery, part deep dive into out-of-control social media addiction and part sleight-of-hand trick by the author.” It has the observational humour of a romantic comedy, but it’s “freighted in darkness” and violence too: look out for a “terrific” plot twist mid-way through."
The Best Thriller Books of 2026 · fivebooks.com