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The Simpsons - S22E21

Family . Comedy . Animation

When the Simpsons discover a collection of keys to every door in Springfield, Lisa stumbles upon an eerie hidden classroom beneath Springfield Elementary School. When she shares her discovery with Principal Skinner, the secret room mysteriously disappears and he takes the only key away. A determined Lisa uses her detective skills to lead her back to the room to solve an old school mystery.

Episode Title: 500 Keys
Airs: 2011-05-15 at 08:00 pm
  • Ken Tucker

    Groening has created a group of characters whose personalities and motives are more vivid and detailed than the vast majority of sitcoms featuring flesh-and-blood actors.

    Entertainment Weekly Full Review
  • Richard Zoglin

    [The show] has a good deal of savvy wit.... The Simpsons, however, is strangely off-putting much of the time. The drawings are grotesque without redeeming style or charm (characters have big beady eyes, beaklike noses and spiky hair), and the animation is crude even by TV's low-grade standards.

    Time Full Review
  • Howard Rosenberg

    Easily the the best, cleverest and nuttiest arrival of the 1989-90 season is The Simpsons...It's very small-scale, but perfectly conceived and executed. What we have here from creator Matt Groening is a rare confluence -- delightful writing, pictures and voices fitting like a Matisse. [12 Jan 1990, p.F1]

    Los Angeles Times Full Review
  • John Engstrom

    "The Simpsons" is both a challenge and a delight. It's also that rarest of TV fauna, a cartoon show with levels of mirth for every brain and pair of eyes in the family. [12 Jan 1990]

    Seattle Post-Intelligencer Full Review
  • Matt Roush

    A hilarious holiday package. [15 Dec 1989, p.3D]

    USA Today Full Review
  • John J. O'Connor

    There is, admittedly, a fine line between being hilariously perceptive and just plain, even objectionably, silly. While habitually teetering on that line, 'The Simpsons' has shown a remarkable ability to come down on the right side most of the time.

    The New York Times Full Review
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