The Trouble with Cash

To finance their retirement, Greg and Liz are planning to sell their property. But when they receive an offer for their full asking price of $1 million, it comes with one condition...the payment is to be in cash.
They go for it. Things go wrong. The money is stolen.
The local police are no help, so Greg devises his own plan to get their money back. A retired investment advisor, he is just a regular guy and not prepared to use violence. Will he be able to beat the seasoned criminals in their own game, or has he taken on a fight that will put him six feet under?