A man staggers in front of a car, and confesses to killing a man before dying. But where is the body?

After discovering the body of an undercover police officer, the CID team blunder into a Drugs Squad operation against a major trafficker that appears to implicate one of their closest colleagues.

When a body is found at the scene of a car crash, Professor T investigates and finds some uncomfortable resemblances to his own situation.

Professor T conducts a series of lectures for his students detailing a high-profile court case in which a caretaker is accused of murdering his employer; the accused was found standing over the victim's body and his fingerprints on the murder weapon, but Professor T is convinced of his innocence, bringing him into conflict with the CID team and DI Paul Rabbits as the investigating officer.

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.

Professor T must prove his innocence when he comes under suspicion after a murder at a criminology conference.

When a body is found floating in a hotel swimming pool, the police suspect foul play and decide to get Professor T's help.

There is a poisoning at a reception. The police start to think that the real target is a civil servant who forged an environmental report who also was present at the reception. Due to the forged report, the daughter of a young family is very sick in hospital. The child's father might have something to do with the death.

An au pair comes home after an evening off to find her employer unconscious in the living room. His daughter has vanished. The investigation leads the police to his business partner.

A girl with Downs Syndrome claims she knows who murdered her mother, but she doesn't want to say who it is. She only trusts the professor. Lisa is worried about her father and Dan has a surprise when he turns up for their date.

A stage prop knife is substituted by a real knife. Who did the switch and why?

There is a hit on prominent businessman during an official function. The shooter fails but the intended victim is found dead a few days later. A family feud reminds Jasper of his past

Diana Tyson was violently attacked on the university campus where Professor T has tenure. DI Lisa Donckers suspects that the assault is very similar to one that occurred years beforehand, and, having been a previous student of Professor T's, she thinks he can help.

When a student is left badly burnt and in a coma after a house fire, the CID team call in Professor T after it emerges the victim was drugged.