Richie Tankersley Cusick

Richie Tankersley Cusick is an American author. She has written more than 25 novels since her first, Evil on the Bayou (1984). She has also contributed to the Buffy the Vampire Slayer book series with the novelization of the 1992 film, the first two TV episodes, collected under the title of The Harvest, from screenplays by Joss Whedon, and "The Angel Chronicles Vol. 2" based on the teleplays "Halloween" by Carl Ellsworth, "What's My Line, part 1" by Howard Gordon and Marti Noxon and "What's My Line, part 2" by Marti Noxon.

Source: Wikipedia (CC BY-SA 4.0), https://en.wikipedia.org/wiki/Richie_Tankersley_Cusick