PREVIOUSLY: 'Masters of Sex' Season 3, Episode 6: The Trial and Error of 'Two Scents' The Syllabus In Howard Hawks' antic comedy, "Monkey Business" (1952), buttoned-up chemist Barnaby Fulton (Cary Grant) ingests an elixir of youth and spends a freewheeling afternoon with buxom secretary Lois Laurel (Marilyn Monroe). The experience, he relates later, is one of "maladjustment, idiocy and a series of low-comedy disasters," but this screwball spirit unfortunately fails to translate to tonight's "Masters of Sex." Culminating with a scene in which Bill Masters (Michael Sheen) aims his recent cruelty at erstwhile partner Virginia Johnson (Lizzy Caplan), the episode fails to make hay from its droll premise, preferring instead a bewildering blend of squeamish humor, strange secrets, and slight camp.