Detektei Detegere / Oliver Peth

Detegere is a professional private investigation agency based in Alzenau, near Frankfurt am Main, Germany. Led by Oliver Peth, also known as “German Sherlock,” we support businesses, law firms, insurers and private clients with discreet investigations in Germany and internationally.

Our expertise includes corporate fraud, internal investigations, employee misconduct, background checks, due diligence, open-source intelligence (OSINT) and surveillance. Through our international network of investigation professionals, we also handle complex cross-border enquiries.

We combine thorough research, practical investigative experience and clear documentation to help our clients establish facts and make informed decisions. Every assignment is approached with discretion, integrity and attention to the applicable legal framework.