When he gets a poor discipline rating, Klink brings in tough sergeant Reinhold Franks (Milton Selzer). At first, Klink is pleased that Franks has gotten the POWS in line -- but his pleasure turns to pain when the ambitious sergeant schemes to have Klink transferred to the Russian front. It is up to Hogan to simultaneously discredit Franks and cast the incompetent Klink in a good light. Written by Phil Sharp), "Colonel Klink's Secret Weapon" was first broadcast on March 24, 1967. ~ Hal Erickson, Rovi