Robert (John Holmes), had his problems, like all men. He just wasn't a ladies man. The only sex he got pleasure from was watching someone else. His friends could pick up women without even trying. Why couldn't John? His penis just wasn't big enough! There was nothing he could do. Why had the "Gods" betrayed him? If the "Gods" betray you, well the "Devil" can help! Just sign Beelzebub's contract and your wishes come true. In the "The Devil In Mr. Holmes" he is now the big-man around town.
| Actor | Role |
|---|---|
 John HolmesJohn Holmes | John Holmes |
 Amber LynnGerman tourist | German tourist |
 Ginger Lynn Allen(archive footage) | (archive footage) |
 Tracey AdamsGerman tourist | German tourist |
 Karin SchubertKarin | Karin |
 Marina HedmanMarina | Marina |
 Christoph ClarkJean | Jean |
 Jean-Pierre ArmandPierre | Pierre |
 Kieran CanterThe Devil | The Devil |
 Erminio Bianchi FasaniNot listed | Not listed |
| NNathalie ChristalNot listed | Not listed |
| JJacky Del RioNot listed | Not listed |