20 Cuts in Chicago

Think you know your city's streets? Think again. You're being watched, and it just got very personal. Your sister is gone, and a sadistic mastermind named "Razor" is holding the blade.
You’re not just taking a walk; you’re a pawn in a twisted scavenger hunt where the stakes are life and death. To find her, you’ll have to save others first—strangers trapped in Razor’s deadly games. You’ll need to solve sinister puzzles and help a detective trace the killer's location.
The clock is ticking, and every wrong move brings your sister one step closer to her final cut. Do you have the nerves to outsmart a killer, or will you become just another notch on his blade?