Professor T is persuaded by a former student - now a police detective - to help her investigate a serial rapist.
When a blameless librarian is poisoned at a drinks reception at a museum, Professor T is called upon to narrow down the list of possible suspects.
Professor T becomes embroiled in a hostage situation, but his unconventional negotiating tactics go down badly with the police. Old flame Christina reveals all is not well at home.
When Professor T helps investigate the disappearance of a six-year-old girl, tensions rise between DI Paul Rabbit and Jasper until they come to blows.
Professor T befriends a vulnerable girl and is convinced she is the key witness to a murder. When Lisa's boss confronts her about her relationship, Lisa makes a bold decision.
When an attempt is made on a billionaire businessman's life, Professor T suspects the culprit may be much closer to home than the police suspect. Plus, it's Professor T's birthday.
When a student is left badly burnt and in a coma after a house fire, the CID team overcome their reluctance to call in Professor T as it emerges that the fire was intentional.
A barrister and his second wife are found shot to death in a crime that has uncanny parallels to a double murder that he prosecuted 15 years ago.
Professor T is asked to decipher a macabre puzzle when a doctor and her family are found dead in a grisly tableau on their living room sofa.
When an artisan baker is found dead after receiving death threats, the police appear to have an open-and-shut case against a convicted murderer's son.
Professor T lectures his students about the murder trial of a caretaker who appears to have been caught red-handed in the act of shooting his employer.
After discovering the body of an undercover police officer, the CID team blunder into a Drugs Squad operation against a major trafficker.
When Professor T is jailed and finds the sights, sounds and smells of prison hard to take, Dan and Lisa try to distract him with a murder case.
When a body is found floating in a hotel swimming pool, the police suspect foul play and decide to get Professor T's help.
Professor T is up in court and must decide whether to save himself or his former lover, and there are no end of suspects in a prison officer's death.
Professor T is desperate to get back to his work when he is called on by the police to investigate a series of unexplained deaths.
Professor T must prove his innocence when he comes under suspicion after a murder at a criminology conference.
When a body is found at the scene of a car crash, Professor T investigates and finds some uncomfortable resemblances to his own situation.
