Every story has a weak point.

A dry umbrella. A duplicated badge. A photograph taken at the wrong time. Across one hundred compact investigations, every lie leaves a trace—and every case can be solved from the evidence in front of you.

Work through five escalating case units covering observation, timelines, ciphers, logic and multi-clue cold cases. Record your verdict, identify the decisive clue, then compare your reasoning with the complete solutions.

Read the evidence. Break the lie. Close the file.