That's how his father (Jude Law) died in the movie the last time I watched it. 0:22 First, he opens the doors as he finds out what's going on on the outside of the museum 0:25 then the fire goes up the stairs and kills him.
The only Harry Potter actor in this movie is Richard Griffiths, who plays Monsieur Frick. He’s the character that keeps getting attacked by Madame Emilie’s dog. He plays Vernon Dursley in Harry Potter.