[9] Aokigahara forest, Dyatlov Pass incident, Lake Shawnee Amusement Park, Willow's Weep haunted house (Cayuga, Indiana), La Ciudad Blanca Common Sense Media reviewer Melissa Camacho gave the show 3 out of 5 stars, saying, "The documentary series offers lots of intriguing narratives about peculiar practices, extraordinary moments, and fantastical events in history that may or may not be explained away by science".

Mellon warned, "the show doesn’t really offer up a lot of concrete answers, but if you can just enjoy the sense of mystery, then you’ll likely be hooked by this strangely watchable series.

"[12] Writing in Irish Film Critic, Thomas Tunstall gave the series 3.5 out of 5 stars, and reported that the show's "subject matter runs all over the board", as if designed for an audience with attention deficit disorder.

Despite feeling disjointed, Tunstall called Shatner's presentation of content "captivating" thanks to his "irrefutable acting chops and narrative gravitas".

McMullan reviewed the show's segments, saying they emphasized evil as a factor, ignored science, and became increasingly "sillier", quipping, "Honestly, you couldn't write this stuff".

She labeled it as "horribly racist"; and wrote "as it turns out, 'A great archaeological mystery' is a code phrase for 'We are too lazy to read or even Google and honestly, racism is far easier than admitting non white people were/are brilliant innovators.