What if you could catch bad guys ... before they did bad things?

That's the premise behind "Predestination," a film based on Robert Heinlein's 1959 short story "All You Zombies." Ethan Hawke stars as a "temporal agent" who uses time travel to right wrongs -- before they happen. Basically, it's part "Minority Report," part "Looper."

As he explains to a new recruit (Sarah Snook), "We prevent crime before it takes place." His main mission is to stop a mass murderer by the name of "The Fizzle Bomber."

The recently-released trailer hints at some mind-bending twists and WTF-worthy moments. Unfortunately, we don't know when we'll get to unravel them, as there's no U.S. release date yet (it opens Aug. 28 in Australia).