Illya and master safecracker Luther Sebastian infiltrate the laboratory of Dr. Kharmusi to steal a thermal prism, while Napoleon distracts the creator. However, the girlfriend of a man Lucius framed for murder is out for revenge.

Pharos Mandor, a former Thrush director, plays Thrush off against U.N.C.L.E. by pretending to defect and provide U.N.C.L.E. with inside information... that discredits his rivals in Thrush.