Fire and Brimstone

S03 E01 • Monday, Jun 5, 1972 • Jun 5 • 50m

John Ridge apparently suffers a breakdown from the pressure, and decides that, due to the excessive threat of pollution on the environment, drastic steps should be taken. He steals some phials of the deadly virus anthrax and holds the government to ransom: unless his anti-pollution terms are met, he will destroy humanity by releasing the virus in a number of major cities. A race against time begins. Can Ridge be tracked down before it is too late?

High Mountain

S03 E02 • Monday, Jun 12, 1972 • Jun 12 • 50m

An inquiry into Doomwatch is begun following the events surrounding Ridge's breakdown. Meanwhile, Quist is summoned to a large country estate in Scotland, where he finds himself offered a new position with both power and wealth in the private sector, but only if he will curtail his investigations into a new drug called disocyanate. Back in London, the Minister decides that it is time to place his own man within Doomwatch, and so despatches Commander Neil Stafford to join the team.

Say Knife Fat Man

S03 E03 • Monday, Jun 19, 1972 • Jun 19 • 50m

Many years ago, Quist worked on the infamous Manhattan Project, which was instrumental in the designing of the atomic bomb codenamed Fat Man, used to obliterate the seaside port of Nagasaki in World War II. This involvement has continued to weigh heavily on Quist's conscience ever since. Hearing the phrase "Say knife," he recognises a potential threat - one that is tied into a break in at a plutonium base. A group of young student activists has stolen several radioactive fuel rods, and are planning to construct their very own atomic device.

Waiting for a Knighthood

S03 E04 • Monday, Jun 26, 1972 • Jun 26 • 50m

A vicar collapses during a sermon, and there are seemingly unrelated events, one involving John Ridge. The answers are out there, but are obscured by big business and profit margins.

Without the Bomb

S03 E05 • Monday, Jul 3, 1972 • Jul 3 • 50m

A revolutionary new lipstick goes on sale, containing pheromones designed to act as an aphrodisiac in order to make the wearer more attractive and desirable to men. This prompts Quist and Bradley to begin an investigation into the effects that pheromones have on people, and how they can alter the illusion of free will.

Hair Trigger

S03 E06 • Monday, Jul 10, 1972 • Jul 10 • 50m

A radical new procedure has been developed for treating violent criminals. The results are extremely positive, but Anne Tarrant is not convinced of its ethics.

Deadly Dangerous Tomorrow

S03 E07 • Monday, Jul 17, 1972 • Jul 17 • 50m

Ridge continues his ecological crusade by warning against the dangerous side effects of the chemical insecticide known as D.D.T. upon the world's developing countries. He stages a publicity stunt by flying in an Indian family and setting them up in a tent in the middle of London's St. James Park. But the prank backfires when it is discovered that one of them is suffering from malaria.

Enquiry

S03 E08 • Monday, Jul 24, 1972 • Jul 24 • 50m

Doomwatch is alerted to a laboratory where a new toxic gas is being developed for military use, available in a 'handy' aerosol can for easy application during conflict. But Quist and Anne's enquiry soon leads them to doubt that the scientists' safety measures concerning the storage of the gas may not be as secure as they think.

Flood

S03 E09 • Monday, Jul 31, 1972 • Jul 31 • 50m

Quist is concerned by the fact that, approximately every one hundred years, certain extreme weather conditions arise which lead to an increase in the water level of the Thames - and just one inch higher would result in the whole of London flooding. Even more disturbing is the fact that this increase is imminent.

Cause of Death

S03 E10 • Monday, Aug 7, 1972 • Aug 7 • 50m

When John Ridge's father, Wilfred, becomes seriously ill, he decides to devote all his time to looking after him. Wilfred is then taken to hospital and put into the care of Doctor Cordell, but shortly afterwards he dies. Ridge is suspicious, and his investigations uncover a disturbing fact: Doctor Cordell is an advocate of euthanasia.

The Killer Dolphins

S03 E11 • Monday, Aug 14, 1972 • Aug 14 • 50m

Dolphins have long been established as highly-intelligent creatures, and the United States Navy has now begun using them in their new program. They are training the dolphins to act as underwater saboteurs, able to attach magnetic explosive devices to the undersides of enemy ships. Quist investigates the matter, and discovers that these apparently docile creatures are capable of becoming deadly killers - something that he experiences firsthand.

Sex and Violence

S03 E12 • Unknown • Unknown • 50m

Unreleased

Doomwatch's Anne Tarrant and Spencer Quist are placed on a government committee investigating whether the UK's censorship laws should be revised. The committee's work brings them into contact with both anti-pornography pressure groups and a man who hopes to one day be a dictator.

Winter Angel

S03 E14 • Thursday, Dec 16, 1999 • Dec 16 • 50m

Astrophysics lecturer Neil Tannahill receives an enigmatic note from Dr. Spencer Quist, former head of Doomwatch, and finds himself drawn into a sinister conspiracy involving Soviet nuclear waste secretly stored at a British nuclear facility.