A part-time business professor at the University of Southern California was arrested Friday on charges of conning investors, including former students, out of millions of dollars he claimed he was using for real estate projects. Barry Landreth, 36, was arrested at his home in Coto de Caza, where FBI agents also seized a luxury car, bank accounts and show horses, authorities said. Landreth ran Webster Realty Investors and apparently told his victims he was developing commercial property in Las Vegas and Chicago, and that investments in the projects would bring returns of 190 percent in 30 to 45 days. "This...