Change one thing and everything changes. One summer night in 1985, the lives of three teenagers are shattered by a horrific car crash, resulting in the death of a young woman near a sprawling oak tree that marks the perimeter of 18 Division Street. For the Wilf family, it will become the deepest kind of family secret, one so dangerous it can never be spoken. 
 
By the time the Shenkmans move in across the street—a young couple expecting a baby boy—the accident has become a distant memory. But when Waldo Shenkman, a brilliant but lonely child, befriends Ben Wilf, a retired doctor who is struggling with his wife’s decline, the Wilfs’ and the Shenkmans’ lives and fates become deeply entwined, and the past comes hurtling back to Division Street, setting in motion a chain of spellbinding events that will transform both families forever.