Heist at the Grand Hotel

Can you solve the heist of the decade? As a crack detective in the 1920’s for the Grand Hotel,  your job is to investigate crime. You haven’t been stumped yet, but this case is a doozy. The Lia diamond, stolen from The Grand Hotel, is worth a fortune.  Unfortunately, it has gone missing and guest checkout is in just an hour. Your job is to find the thief and recover the diamond before time is up and all is lost. Can you solve the heist at the Grand Hotel?