I concur that there most likely isn't an English dub for this film. The great Sweet Cosy Video site lists the Finnish vhs release and that one too is listed as being in Italian language with Finnish subs. Now, all Scandinavian releases have a habit of using the English-dubbed versions and not the Italian ones. I'm sure if there was an English dub they would've used that for the Finnish vhs release.
It's strange, though, because it seems like the kind of film that would be prepared for export. Then again, so does THE TRUE STORY OF THE NUN OF MONZA (1980) but that one was only dubbed in French and German - not English for whatever reason. Same with all the sleazy Gabriele Crisanti productions starring Mariangela Giordana: GIALLO A VENEZIA (1979), MALABIMBA (1979), PATRICK STILL LIVES (1980), THE NIGHTS OF TERROR (1981) and SATAN'S BABY DOLL (1982). They would all seem like the kind of films that would get dubbed but the only one of these that was dubbed into English was THE NIGHTS OF TERROR, which became better known under its US title BURIAL GROUND. I used to think that maybe GIALLO A VENEZIA had an English dub track prepared too because the Blood and Black Lace book has a publicity sheet for it under the mis-spelled title TRHILLING IN VENICE. I have been told, however, that was in fact never dubbed.
But there are plenty of English dubs out there that exist even though they've never seen the light of day on vhs or dvd. Films like L'ORA DI LONDRA (1967), L'ARMA, L'ORA, IL MOVENTE (1973), PLAY MOTEL (1979) and others do exist in English.