Inspector Richard Moser saves police dog Rex from the stray bullet that kills his owner and trainer, adopts Rex as his own, and vows to avenge his fallen colleague and bring the culprits to justice.

Moser investigates the death of a restaurant owner; Hans Felsner's sister-in-law also turns up dead.

When the body of an illegal immigrant is found in a dumpster, Rex leads Richard and Stocki to the local dump where they discover two more bodies, both missing their kidneys.

After finding signs of a violent struggle at the apartment of an elderly woman, Morse discovers she was just one in a string of old ladies who have gone missing along with their valuables.

After a prisoner makes a violent escape during a visit to the dentist and his accomplice gets captured, he holds a ballerina class hostage and demands the release of his friend.

The body of a woman is found dressed in a fancy coat; Moser has two suspects, a zoo keeper and a doctor.