I, Monster
In 19th century London, Dr. Charles Marlowe experiments with a mind-altering drug which causes him to develop an evil alter ego, Edward Blake, whom his colleague begins to suspect is someone that is blackmailing Marlowe.
| Actor | Role |
|---|---|
 Christopher LeeDr. Charles Marlowe / Mr. Edward Blake | Dr. Charles Marlowe / Mr. Edward Blake |
 Peter CushingFrederick Utterson | Frederick Utterson |
| MMike RavenEnfield | Enfield |
 Richard HurndallLanyon | Lanyon |
 George MerrittPoole | Poole |
 Kenneth J. WarrenDeane | Deane |
 Susan JamesonDiane | Diane |
| MMarjie LawrenceAnnie | Annie |
 Aimée DelamainLandlady | Landlady |
 Michael Des BarresBoy in alley | Boy in alley |
 Ian McCullochMan at Bar (uncredited) | Man at Bar (uncredited) |
 Chloe FranksGirl in Alley (uncredited) | Girl in Alley (uncredited) |