Adventures of a Private Eye (1977)

Adventures of a Private Eye
Comedy
While a private detective is away on vacation, his not particularly bright assistant takes it upon himself to "solve" a case that comes in. Complications ensue.
Starring
Christopher Neil, Suzy Kendall, Adrienne Posta, Harry H. Corbett, Diana Dors, Liz Fraser, Jon Pertwee, Irene Handl, Ian Lavender, Anna Quayle
Directed By
Stanley A. Long