Rex: A Cop's Best Friend

A champion swimmer dies during a competition, and drugs are found in the body. David and Rex investigate whether the drugs were ingested intentionally or if the swimmer was murdered.

Davide's ex-girlfriend Sara calls him and tells him she has found a friend's dead body in front of her house. However, when the police arrive, they see no trace of a body.

Davide decides to take a vacation, but must return to work for another investigation when a young boy finds his father murdered in the trunk of his car.

A deadly explosion takes place in the apartment of a witness before they are due to testify. David and Rex investigate who may have wanted the man permanently silenced.

A professional sniper kills three people in three different places all over Rome. David and his colleagues realise that one of the bullets killed the wrong person and was meant for someone else.

David and Rex are working on a seemingly simple murder case when they discover their investigation is linked to another case.