Strange events befuddle the Alphans as they approach the planet Piri. When exploring its lifeless surface, Koenig encounters the seductive servant of the mysterious Guardian of Piri. She offers the…

While exploring an asteroid, the Alphans injure an alien trapped within. Bringing him to Alpha, they discover his wounds have completely healed. The indestructible Balor is a scientist whose people…

A lush Earth-type planet holds the promise of a new home for the people of Moonbase Alpha. When the reconnaissance Eagle returns, it carries an unexpected passenger: Helena’s husband, who…

An alien spacecraft crashlands on the Moon, its passengers refugees from a dying world. As their destination is Earth, they generously offer to take one person with them when they…

When exploring a habitable planet, members of the Alphan survey party vanish without a trace. Are they the victims of an indigenous tribe of Stone Age humanoids? The mystery deepens…

After an encounter with a space-time anomaly, the Alphans find their Moon back in the Solar System on a course to re-enter Earth orbit. The celebration ends when it becomes…

Insp. Longton investigates an alleged affair between a teacher and one of his pupils.

Local residents complain about a gang of youngsters asking for work.

Insp. Longton is held up on her way to an interview for the post of Chief Inspector of the Juvenile Board, as she has to deal with a deranged woman…

The police deal with a spate of thefts of Christmas trees, while Insp. Longton considers her career options in light of her failed bid for promotion.

A gang, disguised as a shooting party, take the wife of a bank manager hostage.

Two brothers-in-law, on opposite sides during the miners’ strike, are at loggerheads.

Insp. Longton informs a woman of the death of her daughter from a drug overdose, but the mother seems to be hiding something.

Sgt Beck and PC Sparks respond to a call to a break-in, but the suspect makes good his escape. Beck suspects a courting couple near the scene of involvement.

Insp. Longton finds that the demands of the job take their toll on her personal life, when responding to a report that an intruder has entered her friend’s house.

A series of video thefts leads to an investigation of a rather more serious crime.

Insp. Longton discovers that one of her colleagues is a thief.

Insp. Longton suspects the involvement of animal rights activists when a butcher and a pathologist are subjected to harassment.

The police have to contend with a hymn-singing religious fanatic and a sleepless lay preacher. Insp. Longton has a heart-to-heart with D.C.I. Perrin.

Hartley Police Station prepares for a visit from the Chief Constable.

A man detained overnight for being drunk and disorderly reports seing a young girl in chains.

An army major asks Insp Longton to help him find a deserting corporal.

Sgt. Beck resigns when a prisoner is found dead in his cell.

A man confesses murder to the new vicar of Hartley then threatens to kill himself.

A local newspaper encourages hostility towards a travelling community.

A police officer’s son is arrested.

Insp. Longton is in court and finds her motives under attack by an aggressive defence barrister.

The manager of a dry-cleaning establishment confesses to a prior conviction for fraud and finds himself out of a job.

A girl complains that a young man told her she will die on Hallowe’en.

P.C. Sparks provides someone with a defence of alibi against accusations of involvement in a series of robberies.

An anonymous telephone call leads Insp. Longton to a hopeless domestic situation and possible child abuse.

Insp. Longton needs the advice of Sgt. Beck in dealing with a troublesome freelance journalist, but he is on leave and cannot be found.

D.C.I. Perrin asks Insp. Longton to help bring an important witness back on side.

Insp. Longton warns local pensioners about confidence tricksters who have been posing as council officials.

A fourteen-year-old girl has gone missing along with two hundred pounds from her mother’s desk.

Insp. Longton investigates a road accident and tries to prove that a drink-driver was responsible.

Insp. Kate Longton leads an urgent search to save a life after receiving an anonymouse telephone call.

Insp. Longton agrees to a meeting about a forthcoming speaking engagement, but finds herself in a perilous situation.

Insp Longton tries to protect some children from a deadly habit.

Sgt Parrish demands to know why Insp Longton has taken Sgt Beck’s name off the duty sheets.