Highway of Eternity

It all began simply enough. A client had vanished, and Jay Corcoran went to investigate the man's empty hotel suite. But Corcoran's trick vision spotted the room-sized box stuck to the outside wall of the suite. There was no way to get into the box, so Corcoran cabled his long-time pal Tom Boone. Boone had a talent. When threatened he could "step around a corner" into some otherwhere. Boone stepped into the box, taking Corcoran with him.
The box turned out to be a time traveler machine that transported them back to 1745 England, where they found a family of refugees from a million years in the future. In that far future, alien Infinites were converting humanity to incorporeal form. When the family had refused conversion, they had to flee. For more than a century, the family had lain hidden in their time bubble. Suddenly, the Infinites' killer monster broke through--and things grew complicated as the family fled to the distant past and the farther future.