Host Robert Stack presides over an investigation into unsolved mysteries ranging from murders to UFO sightings. Through reenactments and interviews, viewers are presented with the known facts of each case. Anyone with additional information is then urged to contact the show's producers via a toll-free telephone number.
18 Episodes on Plex
  • Episode #389
    Episode #389Episode 1
  • Episode #390
    Episode #390Episode 2
  • Episode #391
    Episode #391Episode 3
  • Episode #392
    Episode #392Episode 4
  • Episode #393
    Episode #393Episode 5
  • Episode #394
    Episode #394Episode 6
  • Episode #395
    Episode #395Episode 7
  • Episode #396
    Episode #396Episode 8
  • Episode #397
    Episode #397Episode 9
  • Episode #398
    Episode #398Episode 10
  • Episode #399
    Episode #399Episode 11
  • Episode #400
    Episode #400Episode 12
  • Episode #401
    Episode #401Episode 13
  • Episode #402
    Episode #402Episode 14
  • Episode #403
    Episode #403Episode 15
  • Episode #404
    Episode #404Episode 16
  • Episode #405
    Episode #405Episode 17
  • Episode #406
    Episode #406Episode 18
All 43 Episodes
  • Episode #389
    Episode #389Episode 1
  • Episode #390
    Episode #390Episode 2
  • Episode #391
    Episode #391Episode 3
  • Episode #392
    Episode #392Episode 4
  • Episode #393
    Episode #393Episode 5
  • Episode #394
    Episode #394Episode 6
  • Episode #395
    Episode #395Episode 7
  • Episode #396
    Episode #396Episode 8
  • Episode #397
    Episode #397Episode 9
  • Episode #398
    Episode #398Episode 10
  • Episode #399
    Episode #399Episode 11
  • Episode #400
    Episode #400Episode 12
  • Episode #401
    Episode #401Episode 13
  • Episode #402
    Episode #402Episode 14
  • Episode #403
    Episode #403Episode 15
  • Episode #404
    Episode #404Episode 16
  • Episode #405
    Episode #405Episode 17
  • Episode #406
    Episode #406Episode 18
  • Episode #407
    Episode #407Episode 19
  • Episode #408
    Episode #408Episode 20
  • Episode #409
    Episode #409Episode 21
  • Episode #410
    Episode #410Episode 22
  • Episode #411
    Episode #411Episode 23
  • Episode #412
    Episode #412Episode 24
  • Episode #413
    Episode #413Episode 25
  • Episode #414
    Episode #414Episode 26
  • Episode #415
    Episode #415Episode 27
  • Episode #416
    Episode #416Episode 28
  • Episode #417
    Episode #417Episode 29
  • Episode #418
    Episode #418Episode 30
  • Episode #419
    Episode #419Episode 31
  • Episode #420
    Episode #420Episode 32
  • Episode #421
    Episode #421Episode 33
  • Episode #422
    Episode #422Episode 34
  • Episode #423
    Episode #423Episode 35
  • Episode #424
    Episode #424Episode 36
  • Episode #425
    Episode #425Episode 37
  • Episode #426
    Episode #426Episode 38
  • Episode #427
    Episode #427Episode 39
  • Episode #428
    Episode #428Episode 40
  • Episode #429
    Episode #429Episode 41
  • Episode #430
    Episode #430Episode 42
  • Episode #431
    Episode #431Episode 43
Cast of Season 9
  • Robert StackHost

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