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After Season 3’s shocking finale, Dan and Jasper are consumed by grief. Dan throws himself into work while the Professor hides in his lectures, avoiding the police at all costs. But Helena, Jasper’s therapist, helps him face back up to his police work and the team tackles complex and dangerous cases. But through the danger and mystery, love is very much in the air.

Professor Tempest and the police return to solve more complex and intriguing crimes.
A woman is found dead at the scene of a car crash, but the accident didn’t kill her.
The Professor must prove his innocence to regain his reputation.
Funding for Professor T is provided by Viking.
Episodes
Professor T is persuaded by a former student to help her investigate a serial rapist.
When a librarian is poisoned, Professor T is called to narrow down the list of suspects.
Professor T deals with a hostage situation with his unconventional negotiating tactics.
Professor T is called upon to help investigate the disappearance of a six-year-old girl.
Professor T befriends a vulnerable girl and is convinced she's the witness to a murder.
It's Professor T's birthday and with it comes a haunting childhood memory.
Professor T and the police race to find a sadistic arsonist before they strike again.
When a prominent couple are found dead, is it a copycat crime or was the wrong man tried?
Professor T faces a macabre puzzle when a family is found dead in a grisly tableau.
An artisan baker is found dead. Is it a case of revenge or is the killer closer to home?
A caretaker is accused of shooting dead his rich employer. Is it an open and shut case?
The CID team blunder into a Drugs Squad operation that might implicate their colleague.
Extras
The police need his help following a series of unexplained deaths.
Professor T is up in court and he must decide whether to save himself or his former lover.
A bride is found dead on her wedding night floating in the hotel swimming pool.
The Professor is in jail and must find a way to get his old life and job back.
Professor T unravels knotty crimes, and tries to comprehend the women in his life.
Professor T unravels knotty crimes, and tries to comprehend the women in his life.
The CID team blunder into a Drugs Squad operation that might implicate their colleague.
A caretaker is accused of shooting dead his rich employer. Is it an open and shut case?
An artisan baker is found dead. Is it a case of revenge or is the killer closer to home?
Professor T faces a macabre puzzle when a family is found dead in a grisly tableau.