 Sister Bertrille s family friend, "Uncle" Reggie Overton Perkins, has taken a job in San Juan. Uncle Reggie has somewhat of a shady past and present, but has managed to get a job at Carlos  casino as security expert, which includes showing casino customers how to spot cheaters in the casino. One of Uncle Reggie changes at the casino is to show the counting room through a glass partition, this move to entice casino patrons to gamble to try and win the money they see. Captain Fomento however is skeptical as he feels it will lure thieves to the casino to try and steal the money. For once, he s right. The thief wannabes come in the form of couple, Bruce and Faye. Bruce claims to be a numismatist, and plants in Uncle Reggie s head that there may be rare coins and notes among the casino s money. So Uncle Reggie suggests to the sisters and also convinces Carlos that the sister exchange regular valued coins and notes for collector ones in the counting room as a way to raise money for the convent. At the same time, Faye goes by the convent claiming to be Sister Mary Grace from Uganda in San Tanco on official business. She also claims to be a numismatist, and thus the sisters believes she would be a perfect person to accompany them as they sort through the casino s money. Through this plan, Bruce and Faye manage to steal $50,000 from the casino. Carlos and Sister Bertrille initially suspect a missing Uncle Reggie as the thief.