Question: How did Luther know where they stashed the money, and how did he blow through over $750,000 practically overnight?
Answer: I would also think Luther had found his "Retirement Fund" and was not going to give it up that easy, and had it hidden in a way that it was not going to be easily found, like he did, thanks to the not so crafty criminals who hid almost a million dollars in an air vent.
Answer: Luther worked as the cleaner in the building where the girls hid the money in the air duct. He apparently just happened to come across it while cleaning. As to blowing through it, he may have been lying to them that it was all gone, but he had already bought some pretty expensive items. Something like a fancy sports car alone can cost $100,000 or more.
raywest