Professor Kate Walker is a tenured, world-renowned engineer. She has a job she loves, a daughter she adores, and friends who've been with her through thick and thin. It's a fulfilling life that doesn't really need anything—or anyone—else. Especially not a charming, downright amazing woman who happens to be twenty years her junior.

Carter Burke has lived a storied life and has the Olympic medals to prove it. She's got her dream job coaching a collegiate women's lightweight rowing team in her beloved Boston, and is happily married to the sport she's dedicated her life to. She's happy with her life and not really looking for more, but all that changes when a blonde professor with hypnotizing sea glass green eyes waltzes into her boathouse.

The Charles River has played host to countless scenes of overwhelming joy and crushing heartbreak over the years—but never quite on a scale like this. Because when hearts are involved, the stakes are infinitely higher. Carter is hooked from the moment she first lays eyes on Kate, and their chemistry is undeniable, but is that chemistry enough to help Kate push past her reservations and into Carter's arms?