Tom Riddle (Voldemort) only had one wand of his own. He stole four wands during his life to do evil things. The picture above shows one of the wands that Voldemort used to try to kill Harry Potter.
Tom Riddle framed Hagrid and the spider for killing people at Hogwarts. Really it was the basilisk, and Tom Riddle was controlling it. Hagrid helped Aragog to escape.
