Fitzwilly

Fitzwilly is a 1967 film directed by Delbert Mann, based on Poyntz Tylers 1960 novel A Garden of Cucumbers and adapted for the screen by Isobel Lennart. Its title refers to the nickname of its protagonist, Claude Fitzwilliam, an unusually intelligent and highly educated mastermind of a butler played by Dick Van Dyke the novels title refers to Isaiah 18. The film costars Barbara Feldon in her first featurefilm role.

The staffs secret operations threaten to unravel when Miss Woodworth hires an assistant, Juliet Nowell Barbara Feldon, to assist with her creation of a dictionary that contains all possible phonetic misspellings of words. Juliet is surprised to learn from Miss Vicki that Fitzwilly graduated with honors from Williams College, and she opines that he should be doing something more worthy than being a butler, like joining the Peace Corps.After Juliet inadvertently and unknowingly foils several minor operations, Fitzwilly becomes determined to get rid of her. He conceives a plan to court her in order to induce her to quit. Unexpectedly, the two fall in love. Still unaware of Fitzwillys secret life, Juliet does quit when Fitzwilly refuses to discuss ending his life in service. ........

Source: Wikipedia