Continuity mistake: In the chase scene the American Mini swerves to miss an oncoming car. That car starts out grey then changes to a another green Mini, then back to the original car that came round the corner.
Continuity mistake: The protagonist just arrived to his college. Long shot as he gets off the taxi, and to the right of the frame you see a group of 3 girls crossing the street and walking on the lawn. Cut, and the 3 girls have yet to cross. (00:07:00)
Continuity mistake: When Joe is first in the cat and him and 22 see each other, the cat has a harness on. In the next shot when they leave the room, the harness is gone. (00:38:20)
Continuity mistake: When Maggie runs through the Hollywood hills and stops to snap pictures of the Hollywood sign, the sky shows the sun just went down behind the horizon. But when she looks at the results of her pictures on her phone, the sign has direct mid-day sunlight on the letters of the sign.