Ace Investigations

Ace Investigations is a licensed, full-service investigative agency located in Columbus, Ohio. We supply professional, confidential and cost-effective investigations to individuals, attorneys, organizations and businesses throughout Ohio and the rest of the nation. Ace is headed by Martin Yant, whose investigations and books have earned international and national attention for three decades. Ace investigator Diana Rankin complements Mr. Yant's extensive experience of the inner workings of government and the criminal-justice system with her acumen, executive knowledge and exceptional people skills.