Couple searches for fentanyl-addicted son on the streets of San Francisco

Davis Morgan-Foglia came to San Francisco with his girlfriend 17 months ago. Both struggle with drug addiction and are homeless. Now, the 26-year-old's parents are searching for him on the streets of the Tenderloin. Subscribe to KTVU's YouTube channel:    / @ktvufox2   KTVU delivers the best in-depth reports, interviews and breaking news coverage in the San Francisco Bay Area and California Watch KTVU's newscasts on https://www.ktvu.com/live Download KTVU's news and weather apps for free at https://www.ktvu.com/mobile-apps Subscribe to KTVU's newsletter at https://www.ktvu.com/newsletters Follow KTVU on Facebook:   / ktvu   Follow KTVU on Twitter:   / ktvu   Follow KTVU on Instagram:   / ktvu2