About Jim Vieira and Greg Maestro

Jim Vieira is an author, stonemason, world explorer, historical detective and host of the History Channel shows -"Search for the Lost Giants" (2014) "Roanoke: Search for the Lost Colony" (2015) and "Return to Roanoke: Search for the Seven" (2016). He has also appeared on Expedition Unknown with Josh Gates (2017), Legends of the Lost with Megan Fox (2018), Travel Channel’s Code of the Wild (2019), Science Channel’s Uncharted (2019), Ancient Aliens (2019-2026), Expedition Bigfoot (2021), William Shatner’s Unexplained (2022), Laurence Fishburne’s History’s Greatest Mysteries (2023) and Danny Trejo’s Mysteries Unearthed (2025). He is co-author of Giants on Record (2014) and The Giants of Stonehenge and Ancient Britain with Hugh Newman (2021) and Footprints of the Gods with Greg Maestro (2026).

Greg Maestro is an author, filmmaker, software engineer, AI video creator, and marketing strategist. His work spans ancient exploration, modern product development, AI-powered storytelling, and growth systems that scale brands. Through Deviate Media, he builds apps, campaigns, and creative systems for founders, brands, and agencies — and through his book and the Explorer's Handbook, he traces the stories that shaped the world we walk through today.