Under the Radar - Secrets of a Swedish Serial Killer

In prison, serial killer Peter Mangs writes a song whose lyrics hide the secret of two unsolved murders he committed. He gives the note paper to his psychologist who, before his passing, shares it with John Mork.

John comes across a diary that places Mangs in Florida. With help from a retired FBI agent, they are now trying to map and link photos, diaries and song lyrics to various murder scenes.

John and Jim team up with an investigator for the Boca Mall murders. They hand over compelling evidence linking Mangs to the crime, but is it enough? John realizes he must confront Mangs in person.