EXCLUSIVE: Lana Parrilla (Once Upon a Time, The Lincoln Lawyer) has joined the cast of the USA Network series The Rainmaker, based on the bestselling John Grisham novel of the same name.

Well, I'd call this an upgrade. Lana Parrilla has joined the cast of USA Network's adaptation of John Grisham's The Rainmaker ...

Once Upon a Time' star Lana Parrilla is opening up to ET about the possibility of a "happy ending" for Regina in the series finale and why fans should have tissues ready before watching!