John Mesa is the founder, lead investigator, and chief executive of Agency M Investigators. Known for his calm control under pressure and methodical investigative style, Mesa has spent decades operating in high-risk, high-liability environments where accuracy is everything and mistakes carry consequences.

His expertise spans surveillance operations, Infidelity investigations, fraud and liability cases, missing persons, background investigations, counter-surveillance, bug sweeps, and corporate due diligence. Mesa personally oversees investigative strategy, evidence handling, and reporting standards to ensure every case meets strict legal and ethical requirements.

John Mesa is not just an investigator—he is a litigation support asset, delivering verifiable intelligence that stands up in court & delivers results.