This week Once Upon a Time, the show that's ostensibly about fairy tales' reconciling their myths with a darker, more nuanced reality, had its musical episode, and Lana Parilla's Evil Queen stole the show. Late last night we learned that if Once Upon a Time returns for a seventh season, main star Jennifer Morrison won't be joining it -- meaning Parilla will no longer need to steal the show, as it will basically be hers.