He was an assistant to
Joss Whedon on television shows such as
Buffy the Vampire Slayer,
Angel, and
Firefly. In addition, he scripted the Firefly episode
Heart of Gold. In 2004, he wrote the screenplay for the Direct to DVD animated movie
The Chronicles of Riddick: Dark Fury. In comics, Matthews has co-written the
Serenity comic book prequel mini-series
Those Left Behind and
Better Days with Joss Whedon. He is currently writing
The Lone Ranger for
Dynamite Entertainment. He has also written
Daredevil,
Spider-Man, and
Wolverine comicbook specials for
Marvel Comics. He served as an executive story editor for
Supernatural. In addition, he was credited as a supervising producer and co-executive producer for
The Vampire Diaries. On April 26, 2017,
MTV announced that Matthews will be the main show runner for the third season of the slasher television series
Scream. The show will undergo a reboot with a new cast and setting. Matthews,
Queen Latifah, Shakim Compere, and Yaneley Arty will be credited as executive producers for the series under
Flavor Unit Entertainment. On June 24, 2019, it was announced that the rebooted
Scream series would be moving to
VH1 ahead of the premiere of the third season. The third season, titled
Scream: Resurrection, premiered on July 8, 2019. Matthews was an executive producer and writer for the
CW series,
Legacies. Currently, Matthews serves as an executive producer and writer on the
Prime series
We Were Liars. ==References==