Writing
Greg Walker is a producer and writer.
Smallville
2001 · TV
The X-Files
1993 · TV
Without a Trace
2002 · TV
Titans
2018 · TV
Extant
2014 · TV
L.A. Doctors
1998 · TV
Vegas
2012 · TV
Three Rivers
2009 · TV
Gargoyles
1972 · Movie
Harsh Realm
1999 · TV
Man of Her Dreams
1997 · Movie
