Time Messenger (Paperback) (ISBN-13: 9781778834752)

There can be only four humans other than yourself who understand the full implications of this project: President Truman, Professor Einstein, and my father, who will in time explain the situation to me. We must ensure that the mission is completed and the Tarsi survive. The Tarsi are our allies in 2007 against an intergalactic threat, which threatens the entire human race. If they do not survive, we as a race will not survive...