One way to view someone's Facebook story without them knowing is to turn off your active status before watching the story. You can also try viewing the story using a browser's incognito mode or log into Facebook from a different account. Another option is to use a third-party tool or app, but keep in mind that this could be risky or violate Facebook's terms of service. Here are more ways to view Facebook story anonymously. Just remember, there’s no guaranteed way to stay anonymous without leaving some kind of trace, so proceed with caution.