Missing Persons Investigations
What actually happens — and what typically goes wrong — in the critical first 72 hours.
For Media & Press
Need an Expert Voice on a Breaking Crime Story?
Thirty years as a working Los Angeles private detective — available for same-day commentary on active cases.
Request an InterviewWhat He Covers
Surveillance & Stalking
How real covert surveillance works, and how to tell when someone is using it against you.
Fraud & Confidence Schemes
How staged claims, cons, and 'pig-butchering'-style scams are built — and unwound.
Executive & Celebrity Protection
Real threat assessment vs. the bodyguard-movie version.
Criminal Psychology & Profiling
What makes a psychopath and how to spot one.
Real PI Work vs. Hollywood
The gap between how investigations actually happen and how TV compresses them.
Why Book Him
- 30+ years of hands-on case work — not a talking-head academic take.
- Comfortable on breaking news: same-day turnaround on an active case.
- Author of The Last Lawman, praised by Soldier of Fortune as “a cold, unapologetic memoir... rendered with clinical precision.”
- Direct, plainspoken on camera — a career built on saying what institutions won't.
Recent Hits
- John Gordon TruthNational podcast — 30 min
- WPIC PittsburghEric Bombeck — live
- Talkzone / NationalDavid Campbell — 30 min
- BigSpeakSpeaking representation
“Grevillius neither asks for sympathy nor softens the edges... The Last Lawman is a raw account of a life lived in violence, suspicion, and institutional decay. Unsparing, unromantic, and precise — this book is a record, not a performance.”
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Request an Interview
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