Echoes in Time
by Andre Norton and Sherwood Smith
In a new spirit of detente, Murdock and his new wife Eveleen Riordan join with the
Russians to track down a group of missing scientists on a planet in the past.
Moments later the ground seemed to shake slightly: an illusion, Ross knew, a response of
the mind to the distorted probability waves sweeping out from the apparatus as it
catapulted the two agents into the distant past.
Echoes in Time by Andre Norton and Sherwood Smith (Tor Books, November 1999).