In Search of is a documentary television series that was broadcast weekly from 1976 to 1982 devoted to mysteries and phenomena. It was created after three successful one-hour TV documentaries, In Search of Ancient Astronauts in 1973 , and In Search of Ancient Mysteries and The Outer Space Connection in 1975. All three feature narration by Rod Serling, who was the initial choice to host the series. After the death of Serling, Leonard Nimoy was chosen to be the host of the spin-off series. The series conducted investigations into the controversial and paranormal . Additionally, it featured... episodes about mysterious historical events and personalities such as Anna Anderson/Grand Duchess Anastasia, the Lincoln Assassination, the Jack the Ripper murders, infamous cults , and missing persons, cities, and ships .
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| On the air: | September 1976-March 1982 |
| Network: | Television syndication |