No secret stays locked away forever, no matter how hard you try.
December 1974. Abby Campbell and her brother Charlie are driving to their father's farm on a dark country road when they swerve into the path of another car, forcing it into a tree. The pregnant driver is killed instantly.
In the heat of the moment, Abby and Charlie make a fateful decision. They flee, hoping heavy rain will erase the fact they were there. They both have too much to lose.
But they have no idea who they've just killed or how many lives will be affected by her death. Soon the truth is like a riptide they can't escape, as their terrible secret pulls them down deeper by the day.