Jason Callahan

Lt. Joey Crosby, spokesman for Myrtle Beach police, stated that Callahan's mother failed to file a report with police due to the nomadic nature of Grateful Dead fans. "She attempted to report it when he went missing but didn’t know which jurisdiction to report it to," he said. Callahan's family also stated that they presumed he had gone to "live on his own, elsewhere."

In 2015, photographs surfaced of a young man wearing similar clothes to those worn by the then-unidentified Callahan, and who bore a strong resemblance to the reconstruction images. The person in these photographs was named Jason and was described to have been a fan of the Grateful Dead. He had not been heard from since 1995 and was known to have lived in both Illinois and South Carolina. It had not yet been verified whether this was indeed the John Doe as his former roommates and other friends did not recall Jason's last name. The New York Post and BuzzFeed were some of the newspapers that covered the story.

In January 2015, law enforcement conducted a DNA test to see if the John Doe was the same man as Jason Patrick Callahan, the son of a 63-year-old woman who had not seen or heard from him since June 1995, when he left home to "follow the Grateful Dead". Callahan, who was identified as the young man in the photographs, is described as having been a white male with wavy blonde hair and brown eyes, standing between 5 feet 10 inches (1.78 meters) and 6 feet (1.83 meters) tall, and weighing about 160 pounds (70 kilograms). Callahan, if he was alive, would have been 38 at the time. Callahan was not reported missing by his mother until 2015.

Due to the severity of the lacerations on Callahan's face, mortuary photographs could not be released to the public, although a facial reconstruction was later released. In 2012, another facial reconstruction was created by the National Center for Missing and Exploited Children. The man who had originally bought the tickets found in Callahan's pocket did not remember the person to whom he had sold them. At least 221 missing people were ruled out as possible identities of the victim.

Callahan was killed in a vehicle crash, along with the driver, Michael Hager, after the Vanagon in which they were riding crashed into a pair of trees on U.S. Route 58 West around 1:30 PM on June 26, 1995. Neither man was wearing a seat belt, which likely contributed to each of their deaths. Found with Callahan's body were two scalped Grateful Dead tickets, a dollar in quarters, and a yellow Bic lighter. A letter was found, depending on sources either in Callahan's pocket or near the crash site, reading: Jason, Sorry we had to go, see ya around, call me #914-XXXX. Caroline T. & Caroline O. Bye!!!!. The phone number on the letter lacked an area code and never led to any additional clues. The letter also contained a small drawing that some speculate may be of Jerry Garcia. The tickets were dated June 24, 1995, and June 25, 1995, respectively; the Grateful Dead performed at the Robert F. Kennedy Memorial Stadium in Washington, D.C., on these dates. Neither of the 'Carolines' have ever been identified.

Jason Patrick Callahan (April 18, 1976 – June 26, 1995), previously known as Grateful Doe and Jason Doe, was an American man killed in a car accident on June 26, 1995, in Emporia, Greensville County, Virginia. His body remained nameless until December 9, 2015. Earlier in 2015, photographs of an unknown male surfaced on a Facebook page for the John Doe. DNA testing later confirmed Callahan to be the unidentified man.