Inspector Sejer investigates the delivery of a threatening postcard that coincides with the discovery of a child who was found covered in blood but unharmed in her stroller.

Carmen and Nicolai find their son floating in their backyard pond. When Inspector Skarre arrives on the scene, Carmen reports that Tommy, a healthy toddler with Down syndrome, wandered into the garden while Nicolai was working in the basement and she was cleaning. Skarre senses something is off with Carmen's story and consults his trusted colleague, the famed Inspector Sejer. An autopsy reveals Tommy's lungs to be full of soap. When Sejer and Skarre...

"In this tense and twisty latest from Norway's maven of crime, time shifts between Inspector Sejer's interrogation of the accused Ragna Reigel and the shocking events that led up to her arrest. How did this lonely, quiet woman come to kill a man--or did she?"--