It is the winter of 1924. Dr. Elias Venn — the Institute's most celebrated mathematician, renowned across Europe for his work on probability theory — has vanished without trace from his private study.

Investigators arrived to find the study locked from the inside. Eight mechanical combination locks, each sealed with a mathematical cipher drawn from Dr. Venn's own research, bar every exit. His notes suggest the locks must be broken in sequence — and only by someone who truly understands the mathematics he devoted his life to.

You have been sent in. The locks are connected to probability systems and logarithmic equations from Dr. Venn's final, unfinished paper.

Solve each cipher. Break each seal. Escape before the mechanisms reset at midnight — and uncover the truth of what happened in this room.