If you’re based in the USA, UK, Canada, Italy, or Germany, and you’re looking to stream Dexter: Original Sin for free legally right now (August 2025), you’ve got an excellent and totally legal method you can use. Here’s how to do it in a few simple steps:
At the moment, you can stream all episodes of Dexter: Original Sin for free via Paramount+, a service you can use for free via Prime Video with a free trial (even if you don’t have Prime Video). It’s super easy to start and cancel this free trial, and as long as you remember to cancel the Paramount+ free trial after you’ve watched the episodes and before the 7 days are over, you won’t be charged anything at all. There’s no catch – this is just a great way to stream this series for free in crystal-clear quality without any annoying pop-up ads or sketchy websites!
- head to the page for Dexter: Original Sin on Prime Video
- start the 7 day free trial for Paramount+ (there’s a button to do that on the page as shown in the image above)
- watch all of the episodes within the 7 day period
- cancel the Paramount+ free trial before the 7 days are up (which is very easy to do within your Account settings)
- and that’s it – you just watched all of Dexter: Original Sin online in excellent quality without paying anything!
As long as you cancel the Paramount+ free trial before the 7 days are up, no payments will be taken, as explained on the Prime Video Dexter: Original Sin page here.
Don’t Have Prime Video? No Problem!
You can do this very easily if you already have Prime Video, but even if you don’t have a Prime Video account, it’s no problem – you can still start the free trial as long as you have an Amazon account:
Free trials like this don’t last forever, so don’t miss out! Paramount have only just re-introduced this amazing free trial for August 2025, so it’s a great offer to take advantage of. With this free trial, you get:
- the full season in Ultra HD – No buffering, no low-quality streams
- 9 subtitle options – Watch with captions in your preferred language
- no ads or pop-ups – Just press play and enjoy
- no risk of malware or sketchy websites – 100% safe and legal
As long as you don’t mind watching all of the episodes within the 7 day period, it’s the best way of watching the show for free right now, legally, in excellent quality. You can learn more on the Dexter: Original Sin page on Prime Video here.
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