During some of the hottest summer in years, detectives Elling and Mendt investigate a series of murders.

Detectives Lona Mendt and Frank Elling investigate a man who was hung upside down in his bathroom with his throat cut.

A corrupt LKA officer attempts to obfuscate the investigation; Lona attempts to assist her colleague.

Frank Elling and Lona Mendt must enter the lion's den. All clues point in one direction and to powerful backers. When they finally get an important witness to testify, she is murdered.

Elling and Lona face tough questions from the prosecutor; Elling manages to turn things upside down with his family; Lona deals with a hard blow.

As the detectives manage to unscramble the serial killer's motives, a new mystery about the case looms.