A follow-up to her successful debut Charleston and set in the world’s most glamorous landscapes, this moving new love story from Margaret Bradham Thornton draws on a metaphor of entanglement theory to ask: when two people collide, are they forever attached no matter where they are?

Helen Gibbs, a British journalist on assignment on the west coast of Mexico, meets Christopher Delavaux, an intriguing half-French, half-American lawyer-turned-financier who has come alone to surf. Living lives that never stop moving, from their first encounter in Bermeja to marriage in London and travels to such places as Saint-Tropez, Tangier, and Santa Clara, Helen and Christopher must decide how much they exist for themselves and how much they exist for each other.

In an effort to build his firm, Christopher leads a life full of speed and ambition with little time for Helen and even less when he suspects his business partner of illegal activity. Helen, a reluctant voyeur to Christopher’s world of power and position, searches far and wide for reporting work that will “take a bite out of her soul”—refugees in Calais, a mountain climber in Chamonix, an orphaned circus performer in Cuba. A Theory of Love captures the ambivalence at the center of human experience: does one reside in the familiar comforts of solitude or dare to open one’s heart and risk having it broken? Set in some of the most picturesque places in the world, this novel questions what it means to love someone and leaves us wondering—can nothing save us but a fall?