 The mysterious Hemingway causes havoc at UNCLE headquarters in New York through various means, including tampering with the facility s water supply and electrical system. This occurs on the eve of an important conference where UNCLE will host leaders from around the world. Meanwhile, Thrush s Dr. Egret and Riley, a Thrush mole inside UNCLE, conspire to assassinate the leaders. Solo and Kuryakin try to figure out Hemingway s motives. Virtually the entire episode takes place at UNCLE headquarters.