You will play now the mission « Prohibition » . 

Year 1930 - Chicago - You are Eliot Ness and the Untouchables. You've just learnt that Al Capone has bought alcohol illegally. Prove it.
For this, you must find the right order made by the bar to its supplier.
If you find it, you'll find the exit code.
But Al Capone isn't happy to see you here,  he will be there in an hour with his squad.