It starts with a simple favour - an ordinary kindness mothers do for one another. When her best friend, Emily, asks Stephanie to pick up her son Nicky after school, she happily says yes. But Emily doesn't come back. She doesn't answer calls or return texts. Stephanie knows something is terribly wrong - Emily would never leave Nicky, no matter what the police say. Terrified, she reaches out to her blog readers for help. She also reaches out to Emily's husband, the handsome, reticent Sean, offering emotional support. Then, they receive shocking news. Emily is dead. The nightmare of her disappearance is over. Or is it?