About Us
Ace investigator
Martin Yant was a reporter and editor in Pittsburgh, Chicago, Miami and
Ohio before he became a private investigator. When Presumed Guilty, Mr. Yant's
much-praised book on wrongful convictions, was published in 1991, he
left a job as an editor and columnist at The Columbus Dispatch to pursue
independent journalism and private investigation. Since then, Mr. Yant
has conducted high-profile pre-trial and post-conviction investigations
across the country. Mr. Yant has also conducted many civil
investigations, one of which resulted in one of the largest
civil-rights settlements in Ohio history.
Mr. Yant's investigations have been featured in Time magazine, The New York Times and many other
publications. They have also been highlighted on 48 Hours, Dateline, Forensic Files, Unsolved Mysteries, The CBS Evening News, American Justice, CNN, the
Discovery Channel, the Oxygen network and the Canadian Broadcasting
System. Mr. Yant is also the author of five investigative books.
Ace Investigator Diana
Rankin has an MBA and extensive executive experience in business and
higher education. At Ace, she has investigated sexual-harassment and
corruption allegations while working on numerous wrongful-conviction
and other criminal cases. In the nationally publicized Clarence Elkins
murder case, Ms. Rankin helped develop and implement a plan for
collection of DNA samples from alternate suspects, one of whom was
identified as the killer. This led to Elkins' exoneration and the
suspect's guilty plea. Ms. Rankin specializes in conducting
surveillance and enjoys catching cheaters of all kinds.
2008 Ace Investigations |
1000 Urlin Avenue,
Suite 1821 | Columbus, OH 43212




