Despite this, there wasn't a second series, but that may have been down to the sudden and mysterious disappearance of its writer Ian Mackintosh the following year, who along with his girlfriend Susan Insole and friend and pilot Graham Barber went on a flight over the Gulf of Alaska on July 7, 1979, and disappeared.
This circumstance resulted in no second series being created, possibly because of the unexpected and mysterious disappearance of its creator Ian Mackintosh the following year. He, along with his girlfriend Susan Insole and friend Graham Barber, embarked on a flight over the Gulf of Alaska on July 7, 1979, but was never seen again.