THRUSH creates a double for Solo, and with the seductive aid of Serena (Senta Berger), Darius Two (Michael Evans) kidnaps Solo and substitutes the phony into U.N.C.L.E.'s efforts to transport the code to a secret new weapon. Illya and stewardess Sandy Wister (Sharon Farrell) eventually realize a switch has been made, and the real Solo escapes and in a climactic scene battles "himself".
| Name | Type | Role | |
|---|---|---|---|
| Clyde Ware | Writer | ||
| Jennifer Billingsley | Guest Star | ||
| Sharon Farrell | Guest Star | ||
| Jan Arvan | Guest Star | ||
| Nancy Hsueh | Guest Star | ||
| Michael Evans | Guest Star | ||
| Michele Carey | Guest Star | ||
| Fabrizio Mioni | Guest Star | ||
| Paul Siemion | Guest Star | ||
| Donna Michelle | Guest Star | ||
| Bill Gunn | Guest Star | ||
| Senta Berger | Guest Star | ||
| Harold Gould | Guest Star | ||
| John Newland | Director |