Warning: This interview spoils the events of the "Wizards Beyond Waverly Place" series finale. The four-part series finale of "Wizards Beyond Waverly Place," which aired August 4 on Disney Channel, pit the Russo family against the nefarious Nicodemus Penwulf (Tobias Jelinek) for one last battle — and not everyone made it out alive. In this reality, Alex and Harper were still roommates, and Harper convinced Alex that Mason was coming over to propose. So, why did "Wizards Beyond Waverly Place" bring back Mason, whom Alex was still dating at the end of the original series, only to reveal that he passed away at some point between the two shows? "We always wanted to bring Mason back, but it's a double-edged sword any route you choose," star and executive producer David Henrie tells TVLine.