Overview

Last seen: August 2, 1974, approximately 2:00–3:00 p.m.

Last seen by family: Vicinity of Routes 10 and 395, Rialto/San Bernardino area, California.

Subsequent confirmed travel: King boarded a bus bound for La Paz, Mexico, and records indicate that he crossed the U.S.-Mexico border at Tijuana that same day.

What happened: King was traveling with camping equipment and apparently intended to continue through Mexico. After crossing into Mexico, he disappeared and has never been heard from again.

Case status: Missing and unresolved.

Detailed Case Breakdown

Christopher Martin King Missing Since 1974: The Unsolved Disappearance During a Journey to Mexico

Christopher Martin King was a 24-year-old Virginia resident who disappeared on August 2, 1974, after leaving the Rialto/San Bernardino area of Southern California on a journey into Mexico. More than five decades later, King remains missing, and the circumstances of what happened after he crossed the international border remain unknown.

Very Brief Case Summary

Last seen: August 2, 1974, approximately 2:00–3:00 p.m.

Last seen by family: Vicinity of Routes 10 and 395, Rialto/San Bernardino area, California.

Subsequent confirmed travel: King boarded a bus bound for La Paz, Mexico, and records indicate that he crossed the U.S.-Mexico border at Tijuana that same day.

What happened: King was traveling with camping equipment and apparently intended to continue through Mexico. After crossing into Mexico, he disappeared and has never been heard from again.

Case status: Missing and unresolved.

Who Was Christopher Martin King?

Christopher Martin King was born May 28, 1950. At the time he disappeared, he was approximately 5 feet 8 inches tall and weighed about 150 pounds. He was white, with sandy blond or sandy brown hair and blue eyes. He wore eyeglasses with wide lenses and metal frames and had a birthmark on the left side of his abdomen.

King’s primary residence was Hampton, Virginia. Historical case information also identifies him as a Vietnam veteran who had served as a corporal in the U.S. Army.

Christopher King’s Disappearance

On August 2, 1974, King’s relatives last saw him between approximately 2:00 and 3:00 p.m. near Routes 10 and 395 in the Rialto/San Bernardino area of California.

He was apparently embarking on an extensive trip through Mexico. King boarded a bus headed for La Paz, Baja California Sur. Available case information indicates that he successfully crossed the border at Tijuana on August 2 using a Mexican visa.

That border crossing is particularly important because it indicates that King did not simply disappear immediately after leaving his relatives in California. He made it into Mexico, substantially widening the geographical scope of the mystery.

After the border crossing, however, the trail disappears.

His Planned Route Through Mexico

Investigators and missing-person organizations have documented a possible itinerary for King.

He may have intended to travel through Baja California to La Paz, take a ferry to mainland Mexico, and continue toward Guadalajara. From there, his expected route may have taken him southeast through Mexico City and Mérida before reaching Isla Mujeres and archaeological sites in the Yucatán region.

Whether King ever reached La Paz—or any of the later destinations on the proposed itinerary—has not been publicly established.

There are no publicly documented confirmed sightings of King after the known border crossing at Tijuana.

What Christopher King Was Carrying

King was prepared for extended travel. He carried a red nylon backpack containing a complete set of camping equipment.

His clothing included sport shirts, colored T-shirts, jeans and cutoff jeans. Records also mention Wallabee-style desert boots and low-quarter black sneakers. His backpack, camping equipment, clothing and other personal possessions could potentially have been important identifiers if they were subsequently recovered.

None of the publicly available case summaries indicates that King’s backpack or camping equipment has been conclusively recovered.

The Central Mystery

The central question in Christopher King’s disappearance is what happened after he entered Mexico.

The known circumstances support several possibilities but establish none of them. He could have continued traveling before encountering an accident, becoming stranded in an isolated area, becoming the victim of a crime, or experiencing some other event that prevented him from contacting his family.

There is currently no publicly established evidence proving that King was murdered, and his case should therefore be described as an unresolved missing-person case rather than a confirmed homicide.

That distinction is important. Although decades without contact are deeply concerning, the publicly available records do not establish King’s ultimate fate.

Identification Records and Forensic Evidence

Historical case information indicates that King’s dental records, fingerprints and DNA are available. Those identifiers are especially significant in a disappearance of this age because they can be compared against unidentified remains discovered years or even decades later.

King is listed in NamUs as MP1752, according to multiple case references, while the Doe Network has historically listed him as 4071DMCA.

The California Department of Justice continues to list Christopher Martin King in its missing-person database. Its current public record gives the Siskiyou County Sheriff’s Department as the contact agency and lists case number 1090282.

Latest Publicly Documented Investigation Information

One of the more recent publicly documented developments concerns an unidentified man whose remains were discovered near Upland, California, in 1979.

Because of similarities involving age, physical characteristics and geography, Christopher King had been considered in discussions surrounding unidentified remains over the years. Current information concerning the Upland John Doe, NamUs UP2511, now specifically lists Christopher King, MP1752, as an exclusion. In other words, that unidentified man is not Christopher Martin King.

This is an investigative development because eliminating an unidentified person prevents an incorrect identification and narrows the universe of possible matches.

The California Department of Justice database continues to carry King’s missing-person record, indicating that the case remains unresolved.

The Doe Network’s archived update records also show that information in King’s case, 4071DMCA, has been updated over the years, including an update documented in 2018 and another case-information update reflected in its 2022 archive.

No credible public source located for this review reports that King has been found or that investigators have determined what happened to him.

More Than Five Decades Without Answers

Christopher Martin King’s disappearance is unusual because investigators have a documented starting point and evidence that he crossed an international border, yet virtually everything after that point remains uncertain.

He left California prepared for an ambitious journey through Mexico. He had camping gear, clothing and an apparent itinerary. He crossed into Tijuana and was expected to continue south.

Then the documented trail ended.

More than 50 years later, Christopher Martin King remains missing. His case continues to depend on identification comparisons, surviving records, potential witnesses and information that may still exist in the United States or Mexico.

Anyone with credible information concerning Christopher Martin King’s disappearance should contact the law-enforcement agency handling his case rather than attempting to investigate or approach anyone independently.