Mark Allen Thompson

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Above Images: Thompson, circa 2001


Vital Statistics at Time of Disappearance

  • Missing Since: November 1, 2001 from Clearwater, Florida
  • Classification: Endangered Missing
  • Date Of Birth: January 23, 1971
  • Age: 30 years old
  • Height and Weight: 5'10 - 5'11, 160 pounds
  • Distinguishing Characteristics: Caucasian male. Light brown hair, brown eyes. Thompson has a wart on the inside of his right knee.
  • Clothing/Jewelry Description: Knee-length khaki shorts and a pink and blue or white and blue striped shirt with a drawstring collar.
  • Medical Conditions: Thompson has bipolar disorder and requires medication to treat it. He may not have his medicine with him.
  • Bar

    Details of Disappearance

    Thompson was last seen leaving the Pro Shop Pub in the 800 block of Cleveland Street in downtown Clearwater, Florida, sometime after midnight on November 1, 2001. He resided with his mother in the 100 block of Waverly Way in Clearwater at the time of his disappearance. He has never been heard from again.

    Thompson's mother reported him missing the evening after his disappearance when he failed to show up for work. On November 5, his 1998 Ford Ranger 300 series pickup truck was found abandoned in Tampa, Florida. There was no sign of violence in the vehicle and no indication as to Thompson's whereabouts. His case remains unsolved.

    It has been suggested that Thompson's disappearance may be connected to the murder of Michael Wayne Wachholtz and the disappearances of Jason Galehouse, James Shumaker, and Bradley Williams. A photograph of Wachholtz is posted below this case summary. All the men are gay, all are within the same age group, and they all disappeared from the same area. All of them besides Thompson disappeared from Tampa, which is where Thompson's car was found. Williams disappeared in 2001, Shumaker in 1995, and Wachholtz and Galehouse on the same day in 2003. Wachholtz's body was found in mid-January 2004, wrapped in a sheet and stuffed in the back of his 1992 Jeep Cherokee SUV, which was in the parking lot of a Town 'N Country restaurant in Tampa. The other men remain missing.

    In May 2004, an affadavit was filed in the United States District Court of Tampa which accused Lorenzo of drugging Galehouse and Wachholtz, sexually abusing them, and causing their deaths. Scott Paul Schweikert was named as an accessory after the fact. Neither of them have been formally charged in Wachholtz's death and Galehouse's disappearance, however. Investigators alleged that Lorenzo and Schweikert gave the men gamma hydroxy butyrate (GHB), a "date rape" drug which causes people to become extremely drowsy and suggestible and, in higher doses, may put a person in a coma. They believe the two suspects lured men to Lorenzo's home, drugged them with GHB and tortured them. Lorenzo was convicted of ten GHB-related charges in 2006 and was sentenced to 200 years in federal prison. A photograph of him is posted below this case summary. Schweikert was sentenced to 40 years in prison for his role in the crimes.

    In September 2012, Schweickert was charged with two counts of first-degree murder in the death of Wachholtz and the presumed death of Galehouse. The indictment states he "did unlawfully and feloniously aid, abet, assist, cause, incite, advise or encourage" the men's homicides. If convicted, he could possibly face the death penalty. He is awaiting trial.

    No one has been charged in connection with Thompson's disappearance and it's unclear if his case is related to the others. His disappearance remains unsolved.

    Wachholtz Lorenzo
    Left: Michael Wachholtz;
    Right: Steven Lorenzo


    Investigating Agency
    If you have any information concerning this case, please contact:
    Clearwater Police Department


    Source Information
    Clearwater Police Department
    The Weekly News
    Find Jason Now
    The Herald Tribune
    The South Florida Sun-Sentinel
    Tampa Bay News
    The St. Petersburg Times
    Missing Persons Throughout the World
    Express Gay News
    Clearwater Police Department
    The Tampa Tribune


    Updated 7 times since October 12, 2004.

    Last updated June 2, 2013; distinguishing characteristics, clothing/jewelry description and details of disappearance updated.

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