Search underway for missing 20-year-old man with autism from HarlemLoved ones of 20-year-old Isaac Wilkie posted pictures of him Thursday evening near his home in Harlem. Loved ones of 20-year-old Isaac Wilkie posted pictures of him Thursday evening near his home in Harlem. Loved ones of 20-year-old Isaac Wilkie posted pictures of him Thursday evening near his home in Harlem. Loved ones of 20-year-old Isaac Wilkie posted pictures of him Thursday evening near his home in Harlem. Loved ones of 20-year-old Isaac Wilkie posted pictures of him Thursday evening near his home in Harlem.