Delete the file and use a Virus Scanner if you have already downloaded or opened it.
Instead of downloading high-risk files, you can watch this episode through official platforms: Manifest is available on Netflix .
Standard video files for TV shows are typically in .mp4 or .mkv formats. A single episode packaged as a .zip file is highly suspicious and is often a "threat vector" for malware writers.
If you open the zip and see an .exe , .scr , or .bat file, do not run it . These can infect your system immediately. Episode Details: "Hard Landing"