Blood Trail
Detective Wheldon, the top man in NYPD Homicide is approached by two FBI agents who offer
to let him go back in time two weeks to observe the 4th killing by a serial
killer.
This is the first story in Future Imperfect, a 2001 anthology of 12
original time-travel stories, co-edited by the prolific anthologist Martin H. Greenberg
(1941-2011) who was also a political science professor at the University of Wisconsin,
Green Bay.
— Michael Main
When it became clear that time travel was even a remote possibility, the government
bought a lot of scientists. Those who didn’t play got discredited.