Overview
Without a Clue is a 1988 British comedy film directed by Thom Eberhardt and starring Michael Caine and Ben Kingsley. It is based on Sir Arthur Conan Doyle's characters from the Sherlock Holmes stories but, in this version, the roles are reversed: Dr. John Watson is the brilliant detective, while "Sherlock Holmes" is an actor hired to pose as the detective so that Watson can protect his reputation as a physician.
Plot
Sherlock Holmes is a fictional creation, the central character in a series of short stories written by Dr John Watson and published in The Strand Magazine. Watson conceives of Holmes as a way for him to solve crimes incognito, as he views detective work as merely a hobby and does not want the attention it would bring to his medical career. However, when the reading public demand to actually see "Holmes", Watson hires a washed-up stage actor, Reginald Kincaid, to play the part. Kincaid slowly learns to memorise the doctor's exacting, detailed instructions every step of the way and manages to convince the public that he is indeed "Holmes".
After a major case, Kincaid oversteps his boundaries with Watson, who fires him. Realising that he should have been honest from the start, Watson decides to write Holmes out of his stories and replace him with a new character, "The Crime Doctor", based on himself. Unfortunately, the idea of a physician rather than a detective solving crimes is rejected by the public, and when Watson attempts to investigate a crime of arson at a paper warehouse, he quickly finds that no one is willing to share information or co-operate with his inquiries.
Soon after, the British government contacts Watson, requesting that "Holmes" solve a major theft. A government mint recently reported the disappearance of printing plates for £5 banknotes, with the printing supervisor, Peter Giles, having gone missing on the night of the robbery. The counterfeiting of these notes would cause the inevitable collapse of the economy if they were allowed to circulate. Watson is therefore forced to hunt down a drunken Kincaid and clean him up before accepting the case.
From Wikipedia (CC BY-SA 4.0).