"American Ultra" premiere in Los Angeles (21 images)

Cast members Jesse Eisenberg and Kristen Stewart attend the premiere of the motion picture comedy "American Ultra" at the Ace Hotel Theater Downtown in Los Angeles on August 18, 2015. Storyline: A stoner - who is in fact a government agent - is marked as a liability and targeted for extermination. But he's too well-trained and too high for them to handle. Photo by Jim Ruymen/UPI

Cast members Jesse Eisenberg and Kristen Stewart attend the premiere of the motion picture comedy "American Ultra" at the Ace Hotel Theater Downtown in Los Angeles on August 18, 2015. Storyline: A stoner - who is in fact a government agent - is marked as a liability and targeted for extermination. But he's too well-trained and too high for them to handle. Photo by Jim Ruymen/UPI

Cast member Kristen Stewart attends the premiere of the motion picture comedy "American Ultra" at the Ace Hotel Theater Downtown in Los Angeles on August 18, 2015. Storyline: A stoner - who is in fact a government agent - is marked as a liability and targeted for extermination. But he's too well-trained and too high for them to handle. Photo by Jim Ruymen/UPI

Cast member Kristen Stewart attends the premiere of the motion picture comedy "American Ultra" at the Ace Hotel Theater Downtown in Los Angeles on August 18, 2015. Storyline: A stoner - who is in fact a government agent - is marked as a liability and targeted for extermination. But he's too well-trained and too high for them to handle. Photo by Jim Ruymen/UPI

Cast member Kristen Stewart attends the premiere of the motion picture comedy "American Ultra" at the Ace Hotel Theater Downtown in Los Angeles on August 18, 2015. Storyline: A stoner - who is in fact a government agent - is marked as a liability and targeted for extermination. But he's too well-trained and too high for them to handle. Photo by Jim Ruymen/UPI

Cast member Kristen Stewart attends the premiere of the motion picture comedy "American Ultra" at the Ace Hotel Theater Downtown in Los Angeles on August 18, 2015. Storyline: A stoner - who is in fact a government agent - is marked as a liability and targeted for extermination. But he's too well-trained and too high for them to handle. Photo by Jim Ruymen/UPI