Glimpse — John Russell Fearn

Jeffrey Collins's fate was sealed when he stopped his car to help a man who appeared to be an injured motorcyclist. When the injured man vanished before his eyes, Collins turned to a scientist, Dr. Whittaker, to make sense of the mystery. But when Whittaker was found dead, a victim of poisoning, Collins was accused of his murder.
The evidence against him was damning. Where had he been during the period when Dr. Whittaker had died? Had he not quarrelled with him, and had they not both stood to make a fortune from some kind of formula? Unable to explain, Collins was found guilty, and so began an astounding odyssey of space, time, and destiny.