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2018: Hel Coates, her brother and our teenage urban explorers have journeyed through underground New York City and discovered the site where Hel's father disappeared, but in order to find answers and unlock the doorway …
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2018: The adventure is on! Hel Coates, her brother and their millennial teenage friends are running from mercenaries, hiding from monsters and exploring the dangerous world of NYC underground tunnels. But will they fin…
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2018: When teenagers Hel and Homer Coates learn the underground world below Manhattan may hide the mythical Lost City of Atlantis, and their father may be somehow trapped there, the danger has only just begun! The two t…
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2018: Lost cities aren't just the stuff of myths. They exist hidden right under our noses. But when a mysterious expedition is disrupted by supernatural activity, and an antiquities professor goes missing, his teenage d…
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2019: Lost cities aren't the stuff of myth! They exist right under our feet. When her archaeologist father goes missing, teenager Hel Coates rallies her friends and brother to find him. They'll have to dodge a shady cor…