Continuity mistake: Max takes a photo of herself at the start of episode one. When she uses this photo to time-travel in episode five, if you pay attention, it's slightly different than the original photo.
Trivia: Chloe wears a necklace that's made of three bullets throughout the game. This is commonly viewed as either representing the three people who "abandoned" her and thus hurt her (her father, Max and Rachel Amber), or representing three times Chloe is murdered during the game - When she is shot by Nathan at the start, when she is shot by Jefferson in chapter four, and when Max can chose to sacrifice her to save the town in Chapter Five.