(CBSNews) - Ambition, greed and gunshots at a Napa Valley winery -- how did a bag with $800,000 in cash lead to murder in a vineyard?

It was a business deal right out of a Hollywood movie. An investor in a Napa Valley winery ponied up $800,000 cash in an effort to make a fortune in the wine business. What he didn't realize then was that he was investing in his own murder.

"He shot me! He's coming after me in his truck," investor Emad Tawfilis shouted to a 911 dispatcher as he triemod to outrun Robert Dahl through the California vineyard.