Oxford's last all-female college is holding a reunion party to say goodbye to one of its most popular professors. After a guest is found murdered, Lewis believes the killing is connected to an attack that happened at the same building 10 years ago. He turns to his former DS, Alison McLennan, to help him with the case, but it ends up taking a new twist after two more bodies turn up.

Lewis and Hathaway are drawn into a world of virtual bullying, but very real murder, when a professor is found dead after her dating video is leaked online.

On a bank holiday weekend Lewis and Hathaway are called in when a top quiz competitor is found floating dead in the fountain of an Oxford college.

Lewis and Hathaway investigate when a controversial American academic is murdered after speaking at Oxford's Department of Criminology.

When a classics scholar is stabbed to death and dumped in the Oxford Canal, Lewis, Hathaway and Maddox find themselves sorely tested by a bizarre case.

When religious fanatic Steven Mullan is murdered, Lewis investigates celebrity atheist Tom Rattenbury and his family, who had been attacked by Mullan.

Lewis and Hathaway investigate the murder of a university friend of pathologist Laura Hobson. As more deaths occur, they realise that Laura's past may hold the key.

When a botanist accidentally digs up the body of the recently buried Murray Hawes, Lewis and Hathaway are set upon a seemingly impossible quest.

Lewis and Hathaway are thrown into a delicate case involving one of the Oxford University's most prominent figures.

After a body is found on an Oxford tour bus, Lewis and Hathaway are led to Crevecoeur Hall, a sprawling Oxford estate where Hathaway spent much of his childhood.

When an old friend of Hathaway's commits suicide, Lewis investigates a link between his death and a religious group whose members are being targeted by a killer.

Lewis investigates when a visiting female bishop is poisoned. Then two more deaths occur, both mirroring macabre murders from Jacobean revenge tragedy.

When a babysitter is found dead, Lewis and Hathaway are drawn into diverse new worlds including squats, swinging suburbia, primate labs and fetish photography.

As Lewis and Hobson embark on a relationship, a former don is murdered on the night of his release from prison - crushed to death by a Jaguar Mark two.

The ethics of a questionable drug on the Oxford campus of anti-depressants calls into account the questionable judgment of a psychiatry professor.

When a man is found dead at the Bodleian Library, Lewis investigates a link between the death and an intruder on a local professor's property.

Hathaway has been promoted to Inspector after an extended break from the force, and Lewis is enjoying retired life until he's asked to team up with his old colleague again.

When College Dean Phil Beskin is found bludgeoned to death with a rock in local woodland, Lewis and Hathaway are called in to investigate.

Before the fourth murder takes place, the team must uncover the guilty secret that their victims share in order to learn the identity of both the killer and the potential victim.

Lewis and Hobson are examining the body of murdered Vicki Walmsley when a theft of etorphine is reported by the Garsington Equine Centre. The drug was last used a year earlier on a horse that injured its teenage rider, Joshua Grace – the brother-in-law of Reuben Beatty, the first murder victim.

When an Oxford housewife is found hanged in her home, Lewis and Hathaway unearth a far darker murder case than the initial suicide verdict suggests.

An embalmed body is discovered dumped by an isolated farm track. Funeral director Brian Miller identifies the body and GP Matt Whitby confirms the gentleman died of cancer.

Lewis and Hathaway are called in to investigate the apparent death by drug overdose of over achieving student and amateur taxidermist Talika Desai.

Lewis' team must delve into the worlds of social media, drugs, taxidermy, alternative art and the homeless East European community.

Lewis comes face to face with his past in a case driven by celebrity, scheming, and dangerous sexual politics.