About this season
A father-son birdwatching outing becomes a widespread mystery when teenage John Corby—after coming to the aid of neighbour Susan Fraser—finds that his father Tom has vanished.
Episodes (13)
1. Episode 1
Aired 25 September 1972 • 60 min
John Corby is birdwatching with his father Tom. Susan Fraser has found herself cut off from land so John helps her. Reaching land, she gives him a note to explain his absence to his father. However, nobody seems to know where Tom has gone.
2. Episode 2
Aired 2 October 1972 • 60 min
John and Susan seek police help to look for Tom. The police won't intervene, as Tom Corby is suspended from Scotland Yard. Tom and his two contacts meet up with Kessler. Police surveillance believe Corby is on the take.
3. Episode 3
Aired 9 October 1972 • 60 min
John and Susan catch sight of Tom but are unaware that a hitman is assigned to stop them. Tom wants the hitman stopped but the police are closing in. A motorcycle driver has been hired to cause an accident involving John.
4. Episode 4
Aired 16 October 1972 • 60 min
John and Susan realise they're being tailed and outsmart their pursuer. When John gets too close to seeing his father, the pair are trapped underground.
5. Episode 5
Aired 23 October 1972 • 60 min
Tom refuses to leave the Falcon pub unless he knows John is safe, but Bowers has conned him. With his father long gone, John and Susan reach an exit to the surface.
6. Episode 6
Aired 30 October 1972 • 60 min
Susan finds a rope to help John but the motorcyclist is still in the area. A friendly garage attendant learns that the group holding John's father bought a map of Ullswater. John and Susan rent a canoe and attempt to outflank the abductors.
7. Episode 7
Aired 6 November 1972 • 60 min
John and Susan are rescued from the lake. With Susan in hospital care, John learns his father is using an alias.
8. Episode 8
Aired 13 November 1972 • 60 min
The motorcyclist forces John and Susan to ascend the mountain but he takes a bad fall. John leaves Susan to get help. The delirious biker gives a cryptic message to Susan.
9. Episode 9
Aired 20 November 1972 • 60 min
Tom warns John about Bowers close by. Bowers takes Kessler to the airport to show him the target. John and Susan overhear Selby revealing information to his father.
10. Episode 10
Aired 27 November 1972 • 60 min
Tom finds the man, who fit him up, is in charge so he asks for a deal. He knows Bartas is their target and wants in on the hit in Edinburgh.
11. Episode 11
Aired 4 December 1972 • 60 min
John sees Kessler preparing his sniper's rifle, which puts the youngsters in grave danger. Tom is warned about asking questions. With the Tattoo drowning out the noise, John and Susan search the castle in search of Kessler's sniper nest.
12. Episode 12
Aired 11 December 1972 • 60 min
Bartas is struck by a sniper's dart. Bowers pretends to be a doctor, pronounces cardiac arrest, and whisks him off in an ambulance. John goes in pursuit while Susan tells the police about the kidnapping. Tom realises Bowers wants him dead.
13. Episode 13
Aired 18 December 1972 • 60 min
The police discover the stolen ambulance and close in. Bartas is moved but Tom makes a run for it before he's killed. He is thwarted by John's capture but by the time the gang reach the boat, the Coast Guard are on alert.