I know everything
I know everything about him.
I know all about it.
Je sais tout ce qui se passe ici.
I know everything that's going on here.
Je ne savais pas beaucoup au sujet de Naina, mais maintenant je sais tout !
I didn't know much about Naina, but now I know everything!
— New York Masala (2003)
Je sais tout sur le commerce de la crevette.
I know everything about the shrimp business.
— Forrest Gump (1994)