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Mullendore Murder

Four Years After Suspect’s Death, E.C. Mullendore Murder Case Remains Active


Since 2010, two arrest affidavits have been sitting on Osage County District Attorney Rex Duncan’s desk. Both have been sworn, signed and notorized. But neither has ever been… read more

Gary Glanz 50 year anniversary

Gary Glanz Celebrates 50 Years of Solving Crimes

K.J. WEBB Contributing Writer

Private detective Gary Glanz in his office holding the book “Sleuthing,” in which he is featured. Glanz has been highlighted… read more

Tulsa private investigator

Where’s the Money?

The Deliverance of Walt Helmrich

Freddie smiled to himself as he drove past the country club and turned into his Southern Hills neighborhood… read more

Oklahoma Cold Cases

Cold Case Oklahoma


A forest of trees has been sacrificed to newsprint in speculation of who killed 32-year-old millionaire rancher E.C. Mullendore III…. read more

Tulsa private eye

The Private Eye

The Wall Street Journal

When a Chicago prostitute tried to blackmail a wealthy businessman in Tulsa, Okla., not long ago demanding $100,000 in exchange for some embarrassing snapshots-the… read more

Oklahoma cold cases

Scaring Up Old Ghosts

Mike Esterling
Urban Tulsa

Unsolved Mullendore murder mystery gets dusted off just in time for Halloween. Sept. 26, it will have been 40 years since a millionaire… read more

tulsa private investigator

I Spy

Mike Esterling
Urban Tulsa

For more than 50 years, Gary Glanz has seen through the walls of Tulsa, laying bare some of the city’s most infamous cases. There was a… read more

About The Firm


Tulsa Private InvestigatorThe Wall Street Journal calls him “The Super Sleuth” —and with good reason. For more than 50 years, Tulsa private investigator Gary Glanz has been solving major crimes, locating missing people, recovering tens of millions of dollars in cash and other valuable materials and securing priceless art collections—all with a flair, and a sense of professionalism and discretion that have earned him an international reputation. Originally making a name for himself as one of the youngest detectives in the history of the Tulsa Police Department, where he received numerous awards and citations, Glanz left the police department in 1967 to establish his own private investigative firm. Gary G...


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Four Years After Suspect's Death, E.C. Mullendore Murder Case Remains Active  Tulsa private investigator

Gary Glanz Celebrates 50 Years of Solving Crimes  Tulsa private investigator

Where's the Money?  Tulsa private investigator

Cold Case Oklahoma Tulsa private investigator

The Private Eye Tulsa private eye

MORE  Tulsa private investigator


An inside look at some of Tulsa's most notorious cases.

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