The 2025 movie "I Know What You Did Last Summer" is currently only available in theaters. It is not yet streaming on platforms like Netflix or Amazon Prime Video. However, because the movie is distributed by Sony Pictures, it is expected to be available for streaming on Netflix later this year, likely around October or November, which would align well with the Halloween season. Before it reaches Netflix, you will probably be able to rent or buy the movie digitally on services such as Amazon Prime Video or Apple TV, typically around a month after its theatrical release. So, for now, you need to go to a movie theater to watch it. Streaming at home on Netflix or purchase/rental on digital platforms will be available in the fall of 2025. The original 1997 film and previous franchise entries are available to buy or rent online if you'd like to catch up before watching the new movie.