The Master KeyActionWarCrime66The Master Key66ActionWarCrimethumb_upthumb_downThe Master KeyApril 24, 1945Directed byLewis D. CollinsBefore the outbreak of WWII, Nazi sympathizers plot to undermine America.US content warning movie serial Last Updated: 2 days ago Request Update CastMilburn StoneAgent Tom BrantJan WileyJanet LoweDennis MooreJack RyanAddison RichardsGerhard Doenitz / Garret DonahueByron FoulgerProf. Elwood HendersonMaris WrixonDorothy NewtonSarah PaddenAggieGeorge LynnHermanRussell HicksPolice Chief Michael J. O'BrienRoland VarnoArnold HoffmanLash LaRueMigsyJerry ShaneDanNeyle MorrowSpikeJohn EldredgeWalter Stark Image Gallery RecommendedBattlegroundChief of StationBatman400 BulletsWaiting for AnyaShadow of the Thin ManWrong CopsHenchmenIndemnityThe Guns of NavaroneThe Perfect WeaponDouble ThreatNo Name on the BulletSong of the Thin ManJustice League