Up-and-coming Australian actor Dan Ewing (Home and Away) has booked a key role opposite Dylan O'Brien in the Paramount Players movie Monster Problems, Collider has exclusively learned. Michael Matthews (Five Fingers for Marseilles) is directing from a script by Brian Duffield and Matthew Robinson, and Shawn Levy and Dan Cohen are producing for 21 Laps. [caption id="attachment_772170" align="alignright" width="300"] Image via IMDb[/caption] Set in a post-apocalyptic world overrun with carnivorous fauna and giant monsters, the coming-of-age sci-fi story follows a young man (O'Brien) who must travel many miles …