La sanguisuga conduce la danza (1975)

www.imdb.com/title/tt0073655/

Cast (in credits order) complete, awaiting verification
Femi Benussi -Femi Benussi … Sybil
Giacomo Rossi -Stuart Giacomo Rossi Stuart … Count Richard Marnack
Krista Nell -Krista Nell … Cora
Patrizia Webley -Patrizia Webley … Evelyn (as Patrizia De Rossi)
Luciano Pigozzi -Luciano Pigozzi … Gregory
Mario De Rosa -Mario De Rosa … Jeffrey – the butler
Barbara Marzano -Barbara Marzano … Mary, the maid
Marzia Damon -Marzia Damon … Rosalind (as Caterina Chiani)
Lidia Olizzi -Lidia Olizzi … Penny
Susette Nadalutti -Susette Nadalutti
Pier Paola -Succi Pier Paola Succi
Leo Valeriano -Leo Valeriano … Samuel
Rest of cast listed alphabetically:
Luigi Batzella- Luigi Batzella … Police Inspector (uncredited)
Mike Monty- Mike Monty … Gregory’s son – scene in the fisher hut (uncredited)
Rita Silva -Rita Silva … Margaret (uncredited)