From the author of Stones from the River comes an intimate and dangerous story of three friends that goad one another into crossing a line that brings them shocking consequences.
Since early childhood, Annie, Jake, and Mason have had a special bond. When Annie's parents die on the same night that she and Mason are married, the three friends decide to raise Annie's newborn sister, Opal, together.

Annie struggles to be both a sister and a mother to Opal, a wife to Mason, and a friend to Jake. Not surprisingly, their relationships, already entangled, grow dangerous, too close, on the line.

One fateful night the three friends miss the moment when they could still turn back, provoking each other to step across a line that brings shocking, unforeseen consequences.

Once again, Ursula Hegi writes along that border where bliss and sorrow meet. Sensuous, funny, and mysterious, The Worst Thing I've Done takes us into an exuberant and troubled friendship.