Thrice Upon a Time

About the Book

When Murdoch was summoned to his grandfather's isolated Scottish castle, he had no idea of the old man's latest discovery – nor where it would lead him. Sir Charles, a genius in far-out physics, had found a flaw in the law of conservation of energy; in any process an incredibly tiny increment of energy escaped – back through time! Using this "tau" radiation, he could send messages back to the past.

But Murdoch discovered records of messages he knew he had never sent! Were many futures possible? Could a message from Future X alter the past – and thus wipe out Future X? But who would be foolish enough to send a message that could eliminate his own existence?

Then disaster struck. An advanced fusion reactor threatened to destroy all Earth. Grimly, Murdoch sat down to send back the words that would destroy everything he had learned to love.

Get the book Buy or listen
Links open a search for this book at the selected store. Availability may vary.
About the author

James P. Hogan

James Patrick Hogan (born 1941) is a British science fiction author.

More about the author →