I thank the author for the free review copy in exchange for an honest review. This is the 2nd book by Ms. Lehr that I've read. This is a fairly short book, but a tautly written, slightly dark story of what can happen to a seemingly happily, married couple. Audrey enjoys her time in the pool. While she swims her 66 laps (one mile) she gets a chance to think, takes a break from her duties as a stay-at-home mom, and considers if she's getting old, as evidenced by the new gray hairs, and wonders if her husband Jim is having an affair with his coworker. Self doubt eats away at Audrey and she lashes out at Jim who denies an affair. One day at the park Audrey catches the eye of a young grad student. It seems so nice to have someone find her attractive. She just wants to make Jim jealous, but soon she heads down a very slippery slope. Sometimes we go too far and ruin the good thing we have. Very soon Audrey wishes she could turn back time. Go back to a happier period, but the world must get darker before it can be light again, under the cool ripples of the pool.