Dr. Black, Mr. Hyde (1975)

35mm film, Metrocolor
mono, English

An American horror film directed by William Crain.

Plot Summary

Black American scientist Dr Henry Pride develops a serum which will regenerate dying liver cells. Unfortunately, when he tests it out on himself, he turns into an albino madman who goes on the rampage through the Watts district, killing .


* = uncredited

Directed by: William Crain
© MCMLXXV Hyde Productions
A Walker/Bernhard production
Executive Producer: Manfred Bernhard
Produced by: Charles Walker
Associate Producer: William Crain
Screenplay by: Larry LeBron
Based on an Idea by: Lawrence Woolner
Director of Photography: Tak Fujimoto
Film Editor: Jack Horger
Music Composed and Conducted by: Johnny Pate
Costumes Designed by: Emmett Cash
Makeup: Zoltan Elek
Hyde Makeup by: Stan Winston
Special Effects: Harry Wollman
Art Director: Tommy Estridge
Locations: Watts Towers, Watts, Los Angeles, California, USA *

Bernie Casey (Dr Pride/Hyde)
Rosalind Cash (Dr Billie Worth)
Marie O'Henry (Linda [Monte])
Ji-Tu Cumbuka (Lt Jackson)
Milt Kogan (Lt [Harry] O'Connors)
Stu Gilliam as Silky
Sam Laws (bartender)
Marc Alaimo (Preston)
Cora Lee Day (old woman [Mrs Emily Harris])
Gwyn Karon (Gwyn)
Virginia Lynne (Brenda)
Elizabeth Robinson (Cissy [Hubbard])
Della Thomas (Bernice [Watts])
Pamela Serpe (Mary Beth)
Judith Angeline, Janet Dey (nurses)
Nancy Middleton (Betty)
Kejo Thomas (Cathy Watts)
Wilson Bryant III (Jimmy [Watts])
LaVerne Jackson, Angel Colbert (students)
Sam Nudell (doctor)

Alternative Titles

Dr Black and Mr Hyde
Dr Black and Mr White
Das Monster von London
– West Germany
– working title
The Watts Monster – re-release title

Extracts included in
The Best of Sex and Violence (1981)



  • Cinefantastique vol.5 no.2 (Autumn 1976) p.32 – illustrated review by David Bartholomew
  • The Dark Side September 1995 p.16 – review
  • The Hollywood Reporter vol.240 no.6 (6 February 1976) pp.6, 10 – review by Arthur Knight
  • Variety 21 January 1976 p.32 – note
  • Variety 24 October 1979 p.46 – review by Har


  • Hoffman's Guide to SF, Horror and Fantasy Movies 1991-1992 p.110 – credits, review
  • Horror and Science Fiction Films II by Donald C. Willis p.100 – credits
  • Nightmare USA by Stephen Thrower p.516 – note