Marlyn Mason returns as leggy German chanteuse Lily Frankel, who moonlights as an Allied agent. With Lily's assistance, Hogan hopes to destroy a trio of mobile guided-missile launchers. The problem: How to evade a veritable minefield of German radio detectors. Written by Arthur Julian, "Rockets or Romance" originally aired April 4, 1971, as the 168th and final episode of Hogan's Heroes (though it was actually the 156th episode to be filmed). ~ Hal Erickson, Rovi