Unassuming neighbors may not be what they seem in this twisty, spine-tingling thriller from the internationally bestselling author of THE COUPLE AT NUMBER 9 and THE GIRLS WHO DISAPPEARED.

They seem like the perfect couple. But what are they hiding?

When Lena overhears a conversation between her next-door-neighbors, she thinks she must have misheard.

The Morgans are a kind, retired couple who recently moved to their sleepy suburban street in Bristol where nothing ever happens. But to Lena it sounded very much like they were planning a crime.

Her family and friends tell her she must be mistaken. Yet Lena can’t stop thinking about that strange conversation. What if they really are about to do something terrible?

What if she can prevent it?

Especially when doing something might help ease her conscience about her own dark past.