A series of death notices in the Oxford Mail, each with a cryptic message, provides clues to Endeavour’s final investigation, while Thursday’s past catches up with him.

When a librarian is gruesomely murdered at the Bodleian, Endeavour and Thursday have little to go on besides a set of muddy boot prints. With the two main suspects having their own motives for killing the librarian, Endeavour digs deeper into their backgrounds, tracking a trail that appears to connect to seemingly innocent college bequest.

As 1966 draws to a close, the body of a disreputable journalist found in mysterious circumstances threatens to expose past horrors. As the investigation deepens, Endeavour and Thursday face corruption in Oxford's corridors of power.

Morse is recruited by an old college mentor to look into the safety of his estranged wife.

After the mysterious disappearance of a teacher, Endeavour finds himself investigating the dark and secret world of a public school.

When a body is found in Bramford Mere, a marshland outside of Oxford, everyone assumes they are the remains of Dr Matthew Laxman, an Oxford botanist who mysteriously disappeared near the site five years earlier.

With the Cowley team scattered across Oxfordshire, Endeavour finds himself policing a lonely country patch, and back in uniform. His day job is a monotonous investigation of missing livestock and stolen tractors. But when he discovers the dead body of a missing schoolgirl, it opens this quiet backwater to the roar of Castle Gate CID – now staffed by Thursday and an old adversary, the newly promoted DCI Ronnie Box, alongside sidekick DS Alan Jago.

As a multiple murderer haunts the city strangling married women with a silk stocking, Endeavour and DI Thursday's emotional lives are turned upside down.

Endeavour uncovers a potential link between a series of peculiar accidents leading him to an all-women Oxford college determined to eschew co-education.

The railway takes centre stage as Endeavour investigates the disappearance of a local woman - with initial fears linking it to the unsolved murder of a teenager, killed several years earlier.

A murder investigation sends Endeavour and DI Thursday to a girls' school which is haunted by memories of an atrocity committed a hundred years earlier.

Opening the series in 1971, a death threat to Oxford Wanderers’ star striker Jack Swift places Endeavour and his team at the heart of the glitz and glamour of 1970s football, exposing the true cost of success and celebrity, and with it, a deep-rooted division that is soon reflected much closer to home.

Morse and the team are called to investigate the murder of a taxi driver found dead in his cab on the outskirts of Oxford, and worry that a recent string of assaults on cab drivers has escalated to murder. As the inquiry unfolds, the detective finds the case hits too close to home and starts to retreat from those close to him.

It's the lead up to 1970's general election and as racial tensions escalate in Oxford, tragedy strikes in an Indian restaurant, testing family loyalties.

Hollywood glamour comes to Oxford as the stars of a new horror movie sequel begin filming in the city. Meanwhile, the unexplained poisoning of a former detective sergeant leads Endeavour and Thursday to a local cinema, which is playing host the film's stars in a special event.

The sudden death of a secretarial student and the shooting of a doctor appear unconnected despite Morse's theories. Chief Superintendent Bright, the new commanding officer of the Oxford City Police, unimpressed with Morse's zeal, protests to Thursday that the bagman's position is a Detective Sergeant's job and the young constable is too inexperienced. Following the shooting of a vicar, Morse is reduced to general duties for dismissing a beautiful, but mentally unstable girl as a suspect and must continue his investigations alone despite warnings of possible dismissal from his superiors.

It is the winter of 1971 and the team is split up by a snowstorm while investigating the murder of a college don, and Endeavour is stranded at an abandoned hotel where he becomes the subject of a revenge plot.

A photo-shoot on an army base turns sinister when one of the models is found dead. But the investigation is complicated when Sam Thursday is revealed to be involved.

The so called ‘permissive society’ comes under the spotlight as Endeavour is tasked with protecting conservative social activist, Joy Pettybon, after she receives a death threat while visiting Oxford to promote her ‘Keep Britain Decent’ campaign.

Endeavour's return to duty at Castle Gate with a newfound sobriety coincides with a gruesome discovery in a college garden linked to an Oxford orchestra.

Whilst Endeavour sees in 1970 at a Venetian opera, a grisly murder on an Oxford towpath speaks to Thursday's intuition. Back in Oxford, Endeavour meets a kindred spirit.

As the highly-anticipated moon landings of Apollo 11 draw near, Endeavour finds himself investigating the death of a promising young astrophysicist and his girlfriend. Their deaths seeming to be a result of a tragic car accident on first inspection, with the clues pointing to foul play, Endeavour enlists the help of an injured Thursday to uncover the truth.