This is an interesting case I came across.
Mark Jackson disappeared from his penthouse suite in the early morning hours of June 27th, 2004 after going out with a friend, John Bass, who was visiting from NC. His friend who was staying with him claims he woke up the following morning to find Jackson missing. He left behind his phone, medication, keys, apt access card but his wallet, credit cards and passport were missing. His accounts have not been accessed since that night although the morning of June 28th someone did check his email and his voicemail. It is unclear if that was Jackson or someone else.
Apparently Jackson left a note behind but the contents have never been revealed or if LE believes he actually wrote the note.
Unfortunately the surveillance camera's malfunctioned an hour after the and his friend arrived home. He was never seen exiting the building although the camera's did record he and his friend entering the building the night before after going clubbing.
Jackson was an openly gay man who worked as an exec. at a Fortune 500 company. Jackson and Bass had had a relationship and allegedly Jackson wanted the relationship to be more serious. Vials of GHB and crystal meth were found in his home.
In 1988 two other men, Barry Block and David Rhodes, who were also gay men, disappeared from the same apt. building under similar circumstances.
Across the street Steven Lorenzo allegedly drugged and killed 2 men in 2003. He was arrested in 2005 but was only charged with using GHB to incapacitate his victims and sexually assault them. He was given 200 yrs in prison. The body of one of his alleged victims was found but the other body never was.
Mark Jackson was very successful and active. He made a lot of money, just purchased a BMW, had an active social life and it is very unlikely he disappeared of his own accord.
Obviously the two main suspect are his friend who stayed with him that night and Steve Lorenzo who lived across the street in 2004. It is not clear if Lorenzo was living in the are in 1988 when the two other gay men disappeared from the Drake building.
http://www.charleyproject.org/cases/j/jackson_mark.html
http://missingmarkjackson.faithweb.com/
http://www.amw.com/missing_persons/case.cfm?id=27960
http://news.tbo.com/news/MGBKCZHV79E.html