we've got inquiries to make with a lady by the name of bisco.e don't know the level of this lady's involvement at the moment. we've got enough grounds to arrest her if we need to. >> they suspect she is the banker for the masterminds trafficking women like lilly out of thailand. >> it looks like she is ahead of us. >> initial questioning confirms bisco's involvement in the trafficking. she's arrested and taken to a london police station for further questioning. meanwhile, police seize bank records at her home where they're examined by financial investigators. >> i've been through the computers now. there is spreadsheet upon spreadsheet upon spreadsheet of moneys moving in and out of country. she is the money lady dealing with transactions for individuals working at different brothels around the country. >> what sort of money are we talking about, roughly? >> 480,000 over 18-month period. >> investigators find evidence that bisco is running a sophisticated money-laundering operation. >> it appears it is like family members who are sending the mon