Once again, General Burkhalter tries to marry off his Wagnerian sister Gertrude (Kathleen Freeman) to Colonel Klink. The General installs Gertrude as Klink's temporary secretary, which causes problems with Hogan's latest sabotage operation. But Hogan has something else to worry about -- a Gestapo spy has infiltrated his ranks. Frequent series guest star Woodrow Parfrey appears as Hugo Hindman. Written by Bill Davenport, "Casanova Klink" was first telecast on October 14, 1967. ~ Hal Erickson, Rovi