Oscars 2015: 'Once Upon a Time' Teases a "Dark Side" to Emma

Once Upon a Time Teaser - H 2015

Once Upon a Time brought something wicked to the Oscars telecsast.

A new teaser aired on ABC showed Maleficent (Kristin Bauer van Straten), Ursula (Merrin Dungey) and Cruella de Vil (Victoria Smurfit) lurking about, and finally uniting behind Emma (Jennifer Morrison).

Read more Broadcast TV's Returning Shows 2015-16

"There are three ways to corrupt a hero. Three was to tarnish a savior," Rumplestiltskin (Robert Carlyle) says in a voiceover. He goes on to say the trio of villains would need someone willing to walk on "the dark side." 

The ABC show returns March 1 at 8 p.m.