Police carrying out an international manhunt for a former US marine who vanished with a 12-year-old British girl used "mind games" devised by experts to secure her safe return home.Toby Studabaker, 31, was arrested in the German city of Frankfurt Wednesday after disappearing with Shevaun Pennington, a case that sparked huge media attention.The schoolgirl was safely returned to her parents in Manchester, northwest England, five days after running away to Paris with the former marine whom she met over the Internet. Shevaun had been urged to return home in a series of press appeals designed by police psychologists, according to...