Jerry Lewis Jerry Lewis

Footage has surfaced from a long-lost 1972 Holocaust film starring, co-written and directed by Jerry Lewis — and it's not pretty.

The Day the Clown Cried, in which Lewis plays a circus performer who's captured by Nazis after making fun of Hitler and later uses his routines to amuse children in the concentration camp where he's sent, was scheduled to be released at the Cannes Film Festival shortly after it was made. But audience reaction at test screenings caused the film to be shelved, NBC News reports. The final scene reportedly features Lewis' character, Helmut, laughing with a group of children shortly before they're executed in a gas chamber.

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"It was all bad and it was bad because I lost the magic," Lewis admitted in 1973, according to NBC. "You will never see it. No one will ever see it, because I am embarrassed at the poor work."

But over the weekend, a YouTube user uploaded a 7-minute long behind-the-scenes "Making Of" feature that includes scenes from the film. The film's script is also available online.

"This movie is so drastically wrong, its pathos and its comedy are so wildly misplaced. ... 'Oh my God!' That's all you can say," comedian Harry Shearer said in the early 1990s, according to NBC, in regards to a rough cut of the film.

Watch the "Making-Of" feature below. What do you think?