in the boardroom from men to women. denner groups, hold on, hold on. these groups are spending billions in transactions and leveraging friendship into power in industries ranging from tv and film to banking, to non-profits and it's part of the growing underground trend one author calls the stiletto network. the all-girl groups called themselves babes in boyland, chicks in charge and harpies and they're using these to not only make themselves very wealthy and mentor and support the next business leaders. pamela has written for "the new york times," "the financial times" and fortune.com and she is the author of stiletto network, inside the women's groups that are changing the face of business. thanks for being with us. >> thank you for having me. >> i want to start with your story. how did you stumble upon these networks and decide to write a beco book about it. >> a few years ago i was