 After two comedies, "Alfie Darling" (1975) and "The Bawdy Adventures of Tom Jones" (1976), Collins returned to the US to make what she now refers to as the nadir of her film career, the giant insect science-fiction piece "Empire of the Ants" (1977).In Italy she was the leading lady in the thriller "Fearless" (1978); in the US made the lighthearted "Zero to Sixty" (1978); and back in the UK appeared with Robert Mitchum in "The Big Sleep".In 1978, Collins was catapulted back to major stardom in the UK when she starred in the film version of her sister Jackie Collins's racy novel "The Stud".