Tom Corby and his son John are bird watching, by the cliffs, when he spots a number of strangers. John goes to help a girl cut off from land. When he returns his dad has vanished.
The Long Chase (Season 1)
Episode 1 (Episode 1)
Air date: 1972-09-25
Runtime: 60 min
Overview: 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.
Episode 2 (Episode 2)
Air date: 1972-10-02
Runtime: 60 min
Overview: 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.
Episode 3 (Episode 3)
Air date: 1972-10-09
Runtime: 60 min
Overview: 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.
Episode 4 (Episode 4)
Air date: 1972-10-16
Runtime: 60 min
Overview: 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.
Episode 5 (Episode 5)
Air date: 1972-10-23
Runtime: 60 min
Overview: 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.
Episode 6 (Episode 6)
Air date: 1972-10-30
Runtime: 60 min
Overview: 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.
Episode 7 (Episode 7)
Air date: 1972-11-06
Runtime: 60 min
Overview: John and Susan are rescued from the lake. With Susan in hospital care, John learns his father is using an alias.
Episode 8 (Episode 8)
Air date: 1972-11-13
Runtime: 60 min
Overview: 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.
Episode 9 (Episode 9)
Air date: 1972-11-20
Runtime: 60 min
Overview: 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.
Episode 10 (Episode 10)
Air date: 1972-11-27
Runtime: 60 min
Overview: 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.
Episode 11 (Episode 11)
Air date: 1972-12-04
Runtime: 60 min
Overview: 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.
Episode 12 (Episode 12)
Air date: 1972-12-11
Runtime: 60 min
Overview: 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.
Episode 13 (Episode 13)
Air date: 1972-12-18
Runtime: 60 min
Overview: 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.

Seasons
Episodes 13