Flicker

When Liz Franklin received an unexpected job offer from the Treehouse, a trans-lunar space station, she had no idea that her new coworkers had sent a deadly retrovirus back to the year 1809. Now people are dying in an outbreak of flu, and Elizabeth must work with physicist Daniel Oakbridge to reverse the effects of a time-travel experiment gone terribly wrong . . . Time-travel science fiction by E. J. Lake; originally published by Belgrave House