Plot Synopsis

ROB RIGGLE: GLOBAL INVESTIGATOR is a one-hour docuseries that follows actor, comedian and retired Marine Rob Riggle, as he travels the globe to unearth some of the world's greatest legends and mysteries. Inspired by his grandfather, Riggle developed an explorer's spirit at an early age, captivated by incredible myths and legends from far off places he could only imagine. Now, Riggle uses his self-proclaimed "extensive knowledge of everything" to explore a mystifying legend that takes him on an epic adventure around the world each week. In his quest for answers to humanity's biggest questions, Riggle teams up with experts, scholars and local guides who help him use history, archaeology, science and more to uncover the truth. Riggle's adventures take him near and far -- from traveling to Scotland in search of The Holy Grail to diving in Greece for the lost city of Atlantis and jetting off to Key West to look for a pirate's hidden treasure. Fearless in the pursuit of adventure, Riggle puts new skills to the test, tries new delicacies, and meets new people as he travels the globe investigating one epic mystery at a time. "Traveling the world to investigate some of the greatest legends and mysteries proved to be a thrilling adventure and I can't wait to bring Discovery Channel viewers along for the ride this spring," said Riggle.

In the series opener, "The Atlantis Case," experts and archeologists have tried to pinpoint the lost city of Atlantis for centuries, but all have failed. Now Rob Riggle is on the case, and Atlantis has nowhere left to hide.