This episode of Hogan's Heroes features bravura performances by three of the series' most frequent guest stars: Nita Talbot in her customary role of Russian spy Marya, Gavin McLeod as General Von Rauscher, and Larry D. Mann as captured Russian rocket scientist Zagoskin. Von Rauscher hatches a plan whereby Hogan will witness a test flight of Zagoskin's new and devastatingly destructive rocket weapon; Hogan will then be released and sent to England, where he will demand the Allies' surrender lest the weapon be unleashed on London. Can Hogan count on the mercurial Marya's cooperation to foil the General's scheme? Written by Richard M. Powell, "The Witness" was originally broadcast on March 1, 1969. ~ Hal Erickson, Rovi