Nicholas Meyer based his screenplay for the "retro" Sherlock Holmes adventure The Seven Percent Solution on his own best-selling novel. As any Baker Street Irregular will tell you, the title refers to the dosage of cocaine taken by Sherlock Holmes (
Nicol Williamson). The Great Detective's friend and chronicler Doctor Watson (
Robert Duvall), concerned that Holmes' drug dependency is getting out of hand, suggests a cure under the auspices of Viennese psychoanalyst Sigmund Freud (top-billed
Alan Arkin). While undergoing treatment, Holmes comes to the realization that his archival Professor Moriarty (
Laurence Olivier) is not the Napoleon of Crime, but instead a somewhat pathetic philanderer. Not yet completely cured, Holmes recharges his deductive batteries by undertaking a tricky conspiracy case involving another ex-addict, beautiful actress Lola Devereaux (
Vanessa Redgrave). The traditional Holmesian sleuthing and split-second rescues of the film's second half are not as innovative as the Holmes-Freud scenes at the beginning of The Seven Percent Solution, but they provide this largely cerebral effort with a rousing climax. A success with both critics and filmgoers, The Seven Percent Solution opened the floodgates for subsequent TV and movie "reprises" of Conan Doyle's immortal literary figure. ~ Hal Erickson, All Movie Guide