Buffy the Vampire Slayer (1998-2018)

Buffy the Vampire Slayer (1998-2018) is a 39-book series with 39 released primary works first released in 1999 with contributions by Andi Watson, Jen Van Meter, Doug Petrie, Christopher Golden, James Marsters, Jamie S. Rich, Chynna Clugston Flores, Tom Fassbender, Jim Pascoe, Chris Boal, Fabian Nicieza, Scott Lobdell, Amber Benson, Paul Lee, Joss Whedon, Brian K. Vaughan, Drew Goddard, Jeph Loeb, Jane Espenson, Brad Meltzer, Scott Allie, Andrew Chambliss, Drew Z. Greenberg, Christos Gage, and Nicholas Brendon.