For Philadelphia homicide detective Matt Payne, the news from an old law-enforcement friend sends a shiver down his spine: a connection between the Mexican drug cartels and the Russian mob. Russian girls are being smuggled in to work in the sex trade, and now some of them are dying or just disappearing. The trail leads right to Philadelphia -- where Payne learns that's not all. It isn't just Russian girls who are vanishing. Teenage girls are being...