March 22nd, 2017 - A man sets off from Campo, California on a thru hike of the Pacific Crest Trail.  After several weeks of hiking, he decides to spend a couple days resting in Idyllwild California, located only a couple of miles from the PCT.  On April 7th, 2017, he checks out of his hotel and hits the PCT, never to be seen again.  Join us this week as we investigate the disappearance of David O’Sullivan.  Thank you to Athletic Greens for supporting this episode:  Athletic Greens is going to give you a FREE 1-year supply of immune-supporting Vitamin D AND 5 FREE travel packs with your first purchase. All you have to do is visit (https://athleticgreens.com/EMERGING). Again, that is (https://athleticgreens.com/EMERGING) to take ownership over your health and pick up the ultimate daily nutritional insurance!  New Patreon Shout Outs: Allison Spencer!   Patreon Supporter Anniversary: Kate Thackery (Joined August 2020)  Episode suggestion shout out: Michelle Duxbury  Want to help the show out and get even more Locations Unknown content!  For as little as $5 a month, you can become a Patron of Locations Unknown and get access to our episodes two days before release, special Patreon only episode, free swag, swag contests, your picture on our supporter wall of fame, our Patreon only Discord Server, and discounts to our Locations Unknown Store!  Become a Patron of the Locations Unknown Podcast by visiting our Patreon page.  (https://www.patreon.com/locationsunknown)  Want to call into the show and leave us a message?  Now you can!  Call 208-391-6913 and leave Locations Unknown a voice message and we may air it on a future message!  View live recordings of the show on our YouTube channel: Locations Unknown - YouTube  Want to advertise on the podcast?  Visit the following link to learn more.  Advertise on Locations Unknown  Learn about other unsolved missing persons cases in America's wilderness at Locations Unknown.  Follow us on Facebook & Instagram.  Also check us out on two new platforms - Pocketnet & Rumble.  You can view sources for this episode and all our previous episodes at: Sources — Locations Unknown   Become a supporter of this podcast: https://www.spreaker.com/podcast/locations-unknown--6183838/support.