The hotel's comptrollers call Dan and inform him that they have taken in more chips than they dispensed. And it seems that they have taken about two million. With no plausible explanation, Dan decides that they have to close the casino until they can find one. One of the hotel's executives recalls that Clay Sumner, the man who makes the Roth hotel's gambling chips, had a robbery last year but Nelson, who was called in, says that only 50,000 was taken and Dan recovered them. They then go to see Sumner and ask him if he had another robbery but says that after the robbery he redesigned the whole system and the door to the work plant has only one key which he wears around his neck. One of the employees Eddie Stolvak, who sees that Nelson is there goes to see what's going on. Nelson then decides to interview all of Sumner's employees, after Nelson leaves, Dan talks to Clay and he is still mourning his son, Brad, who died recently. Eddie then goes to see Brad who is alive and has a copy of t (thetvdb.com)