...finds out who prongs and co. is? I think that in the film lupin tells harry in the 3rd movie but im not sure. When does harry find out that the people on marauders map are sirius, james, lupin and peter. Does he ever even ask lupin how he knows to read the map. Because how does he know to say refer to sirius as padfoot in the 5th movie b.c in umbridges office harry yells at snape, "hes got padfoot at the place where its hidden!"

and im not talking about the books, im asking about the moviee. pleasee hellpp :]
what part of the movie? i just watched it and didn't hear it anywheree