Thrice Upon a Time

When Murdoch is called to his grandfather's remote Scottish castle, he uncovers a groundbreaking discovery: a flaw in the law of conservation of energy that allows messages to be sent back through time. As he grapples with the implications of altering the past and the existence of multiple futures, a global disaster threatens Earth. Murdoch must then make an impossible choice, sending a message that could erase everything he holds dear.