Gifty is a sixth-year candidate in neuroscience at Stanford School of Medicine studying reward-seeking behavior in mice and the neural circuits of depression and addiction. Her brother, Nana, was a gifted high school athlete who died of a heroin overdose after a knee injury left him hooked on OxyContin. Her suicidal mother is living in her bed. Gifty is determined to discover the scientific basis for the suffering she sees all around her. But even...

When Claire's husband Chris is offered a position that will keep him away from home four nights a week, he dismisses Claire's concern that time apart could be the one thing their fragile union can't weather. Police officer Daniel Rush pulls Claire over during a routine traffic stop, and they run into each other again at the Fourth of July parade. It doesn't take long before Claire and Daniel are in way over their heads and skating close to the line...