The Doomsday Ultimatum

It is the mid-1970s. A group of disaffected politicians,businessmen, and servicemen -- fiercely patriotic men and women with the right skills and ambitions -- plan and execute a bizarre operation to stop Britain sliding into what they see as anarchy.

They seize a nuclear power station as a means of holding the government to ransom. The twist ending comes as a complete surprise and demonstrates this new author's mastery of indirection.