Wed, Jan 21, 1970
Greg Halliday, disgruntled employee at a chemical works, leaves the plant with a phial of deadly nerve gas. He is captured by enemy agents out to obtain his lethal product but saved by the intervention of the Department. However, he absconds to London and threatens to unleash the gas and destroy the city unless world governments listen to his plans for peace.
Sun, Mar 30, 1969
Needing to wake early next day to participate in a beauty contest Susan Lewis, staying at her father's pub in the village of Hambledown takes a sleeping pill but wakes in the night to see the entire population of Hambledown being helped into trucks by military men. Next morning she finds herself the only person in the village. When Department 'S' comes to investigate, a patch of scorched earth in a field where a gate post has been freshly painted seems to point to evacuation from an ecological disaster.
Sun, Apr 13, 1969
An estate agent shows a client a warehouse on a trading estate in which, to their shock, they discover that the entire ground floor of an elegant house has been constructed - furthermore there is a dead woman and an apparently deaf, demented young man, who is taken to a psychiatric hospital but killed before he can say anything more than a woman's name. From a freshly-painted portrait hanging on the wall of the elegant room, Jason deduces that the room is a copy of one in which another murder will soon take place unless Department 'S' can prevent it.
Wed, Mar 11, 1970
An elderly man, wandering on an airport runway in his night wear, is killed by an incoming plane; Jason talks to the man's niece and discovers he worked in industrial financial. Meanwhile, Sir Curtis asks Stewart and Annabelle to track down a scientist working on an advanced form of brain-washing. Jason's investigations lead him to a sinister country club, run by a man called Carter, in reality a front for the brain-washing experiments of Dr. Dreiker. Unless Annabelle and Stewart can get to Jason in time, it will soon be him walking out in front of the flight path.
Wed, Jan 28, 1970
Arriving at Marling Dale Ministry of Defence building in the countryside the chauffeur driving government official Byrom Blain opens his passenger's door to find only a skeleton. Department 'S' joins with the C.I.A. to unravel a plot to kidnap illustrious men and replace them with skeletons and Sir Curtis is on the list of victims, along with Jason.
Sun, Apr 27, 1969
Three days after he disappeared on his way to see 'Don Giovanni' at Covent Garden, food critic Robin Skelton is found wandering in the Mexican desert. The Department is called in to investigate, and it becomes apparent that Skelton was mistaken for his double, rocket scientist Peter Sinclair, who is involved in tests for the American space schedule. Once they realize this, they discover that in the meantime Sinclair has also been kidnapped. The only clue Skelton can give the Department is 'Turtle in the Shell', which leads them to the Bahamas, where Sinclair has been taken by villainous Dr. Wolf.
Sun, Apr 6, 1969
An aeroplane carrying a hundred and thirty passengers on a flight from New York asks for landing clearance in London but, having safely landed, it is discovered that there is nobody at all on the plane and the pilot is later found murdered in a warehouse. The mystery deepens when Annabelle finds a photograph of a reclusive industrialist apparently boarding the plane, although his name was not on the passenger list. Is it all part of an elaborate scheme to abduct him?
Wed, Jan 14, 1970
A tube train arrives at Redbridge station with all its passengers dead and the conductor who found it is also knocked out by nerve gas. Whilst Annabelle is escorting Mrs. Taylor, the widow of one of the dead men, from the morgue, they are held up and Mrs. Taylor is abducted, as later is Jason, whilst investigating at the station. The trail leads to a manufacturing company where Annabelle goes undercover as a secretary though she too is in danger when her employers, criminal speculators out to tap the hotline between the White House and 10 Downing Street, discover who she is.
Wed, Feb 18, 1970
Economist John Burnham is due to become the next head of the International Monetary Fund and he has progressive ideas which certain Communist agents do not want to see put into play so they shoot his wife Mary in front of him. However Burnham keeps repeatedly seeing Mary, though it is assumed that he is going mad, which is what his enemies have set out to achieve in order to discredit him and his work and harm the Western economy. Department 'S' are called in and soon discover that there is an impostor impersonating Mary.