A Tattered Web

(1971)

Writer

Dr. Cook's Garden

(1971)

Teleplay

She Waits

(1972)

Writer

A Gift of Terror

(1973)

Writer

The World of Darkness

(1977)

Teleplay

The World Beyond

(1978)

Writer

Back to the Planet of the Apes

(1980)

Writer

The Forgotten City of the Planet of the Apes

(1980)

Writer

Charlie and the Great Balloon Chase

(1981)

Writer

The Eyes of the Panther

(1989)

Writer

Kalkuliertes Risiko

(1997)

Writer

Dark Shadows: The Vampire Curse

(2009)

Story

Welcome to the Club

(1971)

The World of Darkness

(1977)

Creator