Timescoop

"Timescoop" is a science fiction novel by John Brunner, published in 1969.

Plot summary

The novel expresses Brunner in a lighter mode than one expects of him. The original cover copy said, "He summoned the monsters of the past to help him rule the world." Actually, protagonist Harold Freitas III is merely looking for a publicity triumph, and the "monsters" are duplicates of his own ancestors, brought forward to 2066 by a newly invented time machine. The ancestors have some difficulties, amusingly described, in adjusting to 21st-century mores. Freitas and his sentient computer SPARCI save the day.