Julie Benz, the matriarch of the super-powered Powells, shared a few spoilers about 'No Ordinary Family' when she appeared on 'Good Morning America' (weekdays, 7AM ET on ABC). But she didn't divulge every secret.

In tomorrow's episode, Anthony Michael Hall "plays a man who's stronger and more invincible than Jim Powell (Michael Chiklis)," she said. And the following week, Tricia Helfer plays "a villain with the power of love."

But will viewers ever know exactly how the Powells' plane crashing in the Amazon led to their unique abilities? "You will find out how it happened and why -- [but] I can't tell you!" Benz said.