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.
25 Episodes on Plex
  • Episode #147
    Episode #147Episode 1
  • Episode #148
    Episode #148Episode 2
  • Episode #149
    Episode #149Episode 3
  • Episode #150
    Episode #150Episode 4
  • Episode #151
    Episode #151Episode 5
  • Episode #152
    Episode #152Episode 6
  • Episode #153
    Episode #153Episode 7
  • Episode #154
    Episode #154Episode 8
  • Episode #155
    Episode #155Episode 9
  • Episode #156
    Episode #156Episode 10
  • Episode #157
    Episode #157Episode 11
  • Episode #158
    Episode #158Episode 12
  • Episode #159
    Episode #159Episode 13
  • Episode #160
    Episode #160Episode 14
  • Episode #161
    Episode #161Episode 15
  • Episode #162
    Episode #162Episode 16
  • Episode #163
    Episode #163Episode 17
  • Episode #164
    Episode #164Episode 18
  • Episode #165
    Episode #165Episode 19
  • Episode #166
    Episode #166Episode 20
  • Episode #167
    Episode #167Episode 21
  • Episode #168
    Episode #168Episode 22
  • Episode #169
    Episode #169Episode 23
  • Episode #170
    Episode #170Episode 24
  • Episode #171
    Episode #171Episode 25
All 54 Episodes
  • Episode #147
    Episode #147Episode 1
  • Episode #148
    Episode #148Episode 2
  • Episode #149
    Episode #149Episode 3
  • Episode #150
    Episode #150Episode 4
  • Episode #151
    Episode #151Episode 5
  • Episode #152
    Episode #152Episode 6
  • Episode #153
    Episode #153Episode 7
  • Episode #154
    Episode #154Episode 8
  • Episode #155
    Episode #155Episode 9
  • Episode #156
    Episode #156Episode 10
  • Episode #157
    Episode #157Episode 11
  • Episode #158
    Episode #158Episode 12
  • Episode #159
    Episode #159Episode 13
  • Episode #160
    Episode #160Episode 14
  • Episode #161
    Episode #161Episode 15
  • Episode #162
    Episode #162Episode 16
  • Episode #163
    Episode #163Episode 17
  • Episode #164
    Episode #164Episode 18
  • Episode #165
    Episode #165Episode 19
  • Episode #166
    Episode #166Episode 20
  • Episode #167
    Episode #167Episode 21
  • Episode #168
    Episode #168Episode 22
  • Episode #169
    Episode #169Episode 23
  • Episode #170
    Episode #170Episode 24
  • Episode #171
    Episode #171Episode 25
  • Episode #172
    Episode #172Episode 26
  • Episode #173
    Episode #173Episode 27
  • Episode #174
    Episode #174Episode 28
  • Episode #175
    Episode #175Episode 29
  • Episode #176
    Episode #176Episode 30
  • Episode #177
    Episode #177Episode 31
  • Episode #178
    Episode #178Episode 32
  • Episode #179
    Episode #179Episode 33
  • Episode #180
    Episode #180Episode 34
  • Episode #181
    Episode #181Episode 35
  • Episode #182
    Episode #182Episode 36
  • Episode #183
    Episode #183Episode 37
  • Episode #184
    Episode #184Episode 38
  • Episode #185
    Episode #185Episode 39
  • Episode #186
    Episode #186Episode 40
  • Episode #187
    Episode #187Episode 41
  • Episode #188
    Episode #188Episode 42
  • Episode #189
    Episode #189Episode 43
  • Episode #190
    Episode #190Episode 44
  • Episode #191
    Episode #191Episode 45
  • Episode #192
    Episode #192Episode 46
  • Episode #193
    Episode #193Episode 47
  • Episode #194
    Episode #194Episode 48
  • Episode #195
    Episode #195Episode 49
  • Episode #196
    Episode #196Episode 50
  • Episode #197
    Episode #197Episode 51
  • Episode #198
    Episode #198Episode 52
  • Episode #199
    Episode #199Episode 53
  • Episode #200
    Episode #200Episode 54
Cast of Season 4
  • Robert StackHost

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