Missing 411: The Bizarre Disappearance of Dennis Martin – Podcast #174 Seen Them? April 22, 2025 Leave a Comment on Missing 411: The Bizarre Disappearance of Dennis Martin – Podcast #174 Posted in Seen Them Share: XFacebookPinterestLinkedin Dennis Martin is an American child (six years old) who disappeared on June 14, 1969 in the Great Smoky Mountains National … source Author: Seen Them?