Matthew Daddario & Harry Shum Jr. (Malec) Battle a Shadowhunters Stan | Beat Your Superfan

Shadowhunters stars Matthew Daddario and Harry Shum Jr., aka Malec, face off against their biggest superfan! Matthew and Harry may have the upper hand when it comes to all things Magnus Bane and Alec Lightwood, but this Shumdario stan seriously knows her stuff.