Where This Shows Up and Why It's a Mess to Find
Exploits of Young Don Juan is an 1853 novella by Prosper Mérimée, and trying to track down any combination of book, film, or streaming source for it online will test your patience pretty quickly. The title keeps surfacing as a search term, but the actual content is scattered across public domain archives, obscure DVD pressings, and the occasional academic PDF. I've spent more time than I care to admit navigating this particular rabbit hole, so here's what I know about how it actually works in practice. When you search for this, you're going to hit three separate things that share almost nothing in common. First, there's the Mérimée text itself, which exists in the public domain and is freely available through Project Gutenberg, Archive.org, and a handful of university literature sites. Second, there's a 1940 French film called "Les exploits de Don Juan" directed by Maurice Tourneur, which is basically a historical drama built around the legendary figure of Casanova's rival. Third, there's a confusing overlap of search results that mix up the title with various other Don Juan adaptations, which is why your results page looks like something went wrong. The file I usually go to for the text is the Gutenberg edition translated by Mrs. Arbuthnot. It's clean, properly formatted, and doesn't have the OCR errors that plague a lot of the scanned versions floating around. The original French text is also available on Gallica, the Bibliothèque nationale de France's digital archive, if you want to read it in its original form. I'd recommend the French version if you can handle it. The translation smooths over some of Mérimée's sharper edges, and the prose has a particular dryness that gets flattened in English.
For the film, things get messier. Tourneur's 1940 version is occasionally listed on streaming platforms, but availability shifts constantly depending on region and licensing. I've found it on Criterion Channel at times, but more often it shows up as a DVD-only release from minor French distributors. If you're looking to stream it directly, check JustWatch or the IMDb page for current availability in your territory. The film runs about 90 minutes and features Jean Richard in the lead. It's not particularly renowned, but it's the most complete audiovisual adaptation tied to that specific title. Here's the edge case that always trips people up. There's a 1924 silent film also sometimes referenced under similar titles, and search algorithms routinely merge results from both films plus the book into one confused bundle. I ran into this when I was trying to compile a reading and viewing list for a colleague. Every source I checked had the dates and titles tangled together. My workaround was to pull the BFI National Archive catalog for the British film and cross-reference with the French Cinémathèque database. The two systems use different indexing, so comparing them side by side is the only reliable way to separate what's actually what. One counter-intuitive thing about finding this material is that more visibility doesn't mean easier access. Mérimée's novella gets referenced constantly in academic papers and syllabus reading lists, which makes it appear everywhere, but the actual free full-text versions are hidden behind sites that are poorly organized or outdated. The Archive.org copies are often scanned from secondhand books with watermarks, page gaps, and missing plates. The Gutenberg version is the one to use, but you won't find it ranked first on most search engines because it's old and doesn't have any marketing behind it.
Another practical detail that matters more than it should. If you're downloading the text for research or annotation, don't use the plain HTML version from Gutenberg. Grab the TEI XML or the EPUB. The HTML version strips paragraph breaks and messes up the section headers, which makes citing passages a headache later. I learned that the hard way when I was preparing notes for a paper and had to reformat half the document because the paragraph structure had collapsed during the download. The film side has its own problems. Video quality on whatever streaming source you find it on varies wildly. I remember watching a version that was clearly encoded from a degraded VHS source at some point in its distribution chain. Colors were washed out, dialogue was muddy, and the subtitle burn-in was misaligned by about three seconds. The only reasonably decent quality copy I've seen is from the Criterion release when it's available, which uses a 2K scan from the original camera negative. If you can track down that version, it's worth it. Otherwise you're just guessing what you're getting. There's also a 1973 Italian-produced version that occasionally surfaces under the Don Juan umbrella, and while it shares thematic DNA with the Mérimée story, it's not an adaptation of the novella itself. Search results conflate this with the actual content pretty regularly, which is another reason the topic feels harder to pin down than it should be. The Italian film stars a different actor and takes significant liberties with the source material. If you're looking for something faithful to Mérimée, that's not it.
Get the Full Details

The simplest path, honestly, is to start with the text and treat the film as a secondary bonus. The novella is short, roughly 30 pages in most editions, and it's genuinely well-crafted. Mérimée was a historian and an archaeologist before he was a fiction writer, and that background shows in the precision of his detail. The story moves fast, the dialogue is sharp, and the ending lands without being heavy-handed about it. If you want to watch the film, do it after you've read the book. That way you can actually evaluate whether the adaptation captures what's working in the source material instead of just treating it as a vague period drama. I should mention one more thing about access. Some sites bundle the text and film together under the same search results but they're operated by completely different organizations with no connection to each other. I got confused a few times thinking I was on an official archive when I was actually on a fan site that had copied the Gutenberg text without attribution and linked to a torrent for the film. It's easy to miss the difference when you're skimming through results quickly. Always check the domain and the URL structure before you start downloading anything.