Chilling, twisty, and surprisingly tender, Harmless explores the confusion and messiness of growing up—and asks if we can ever really outrun what haunts us most.

Two years ago, Bea’s life was upended when her beloved twin sister died. Audrey was captivating, an extrovert, their mother’s golden child. Bea was “different,” too intense, and chronically lonely.

Now, in her late twenties, Bea is back home in Park Slope, Brooklyn, her spirits finally buoyed by her plan to start a dog kennel. Inspired by the childhood dream she once shared with Audrey and old, now-estranged friends Tatum and Layla, she’s sure this will be the perfect ode to her sister’s life.

But as they reintegrate into one another’s lives, simmering tensions—and attractions—emerge, and a sinister darkness breaks through to the surface. What do they really want? What happens when buried secrets come to light? And when is the right time to abandon an outdated dream—or a lifelong friendship?