Doris Day was nearing her popular zenith, and Jack Lemmon just hitting his stride, when they teamed up for It Happened to Jane, a small-town comedy in the Capra vein. Doris is a widowed mom whose Maine lobster business is snarled by railroad tycoon Ernie Kovacs (hiding behind a skullcap and a huge cigar), the “meanest man in America.” Her lawsuit against him, aided by lawyer-su…