For more than five decades, Ed and Lorraine Warren walked into houses where nobody slept any more. This fourth volume gathers the files that never made it into the first three.

A New England house in 1850 and three men who believed in nothing. A whole village that no longer exists. A Scottish hotel on the banks of the Spey. A kitchen calendar where a father noted down the punctures in his daughter's tires. A bishop who drove halfway across California, rang the bell twice and left.

Twenty-one investigations told as they were recorded. And in almost every one, the exact moment when somebody could have kept the evidence, and did not.