The language is confusing, the actions are unmistakable. Absent-minded chemist Dr. Barnaby Fulton (Cary Grant) is developing a pill that will defy the ageing process for the pharmaceutical company run by Oliver Oxley (Charles Coburn). When a loose chimpanzee mixes chemicals together that produce this effect, Fulton tries some on himself. This prompts him to act like a teenager, making passes at Oxley’s beautiful buxom secretary, Lois (Marilyn Monroe). Soon everyone, including Fulton’s wife, Edwina (Ginger Rogers), is feeling the effects of the formula and Edwina doesn’t enjoy the effects of youth when she finds herself reliving their honeymoon in the exact suite they spent their wedding night. When Barnaby goes AWOL she awakes to find a baby beside her in bed … Harry Segall’s story was adapted by director Howard Hawks, Ben Hecht, Charles Lederer and I.A.L. Diamond and has a lot of bright moments. It starts in stilted fashion however and the lack of a score (Hawks generally couldn’t abide them) leaves the unpunctuated action wanting. Monroe’s supporting role is underlined by Coburn’s declaration, Anyone can type! when he sends her to find someone to produce a letter; while Grant’s physicality is thrown into relief with a buzzcut. Their day out in his fast-moving roadster as he loses his sight behind his Coke-bottle glasses would be paid homage six years later with Tony Curtis and Monroe in Some Like It Hot. Never quite reaches the apex of screwball that Hawks himself had pioneered fifteen years earlier but it’s good for filling in a filmography that was at times sheer easygoing genius and there are points here when it recaptures the genre’s extraordinary vitality. Coburn and Monroe would be reunited with Hawks in Gentlemen Prefer Blondes.