“In the clubby art world where priceless works are entrusted to dealers and brokers on a promise and a handshake, Michael Cohen, a highly regarded art broker, borrowed millions from prestigious art dealers such as Sotheby’s and was handed a Picasso from another prominent dealer. But according to a complaint filed in US District Court in Manhattan, Cohen fled two years ago, swindling the dealers of millions of dollars and taking a valuable piece of art, as well.”