Experience You Can Trust

NBI was founded on the belief that every client—whether an individual facing a personal challenge or an attorney preparing for court—deserves thorough, honest, and professional investigative support.

With years of hands-on experience in criminal defense investigations, surveillance, background research, and case analysis, we bring clarity to complex situations and deliver results you can rely on.

Meet the Investigator

Bob Ruff — Licensed Private Investigator

With a background in criminal justice, defense investigations, and advanced fieldwork, I have dedicated my career to uncovering truth with precision and integrity. My work spans a wide range of investigations, from domestic matters to complex criminal defense cases requiring detailed analysis and courtroom-ready documentation.

My approach blends professionalism, discretion, and a genuine commitment to helping clients navigate difficult and often stressful circumstances.

Professional Background & Credentials

Areas of Expertise

Criminal defense investigations.
Post-conviction case reviews.
Witness location & interviewing.
Surveillance (covert & mobile).
Background & digital research.
Fraud and misconduct investigations.
Evidence analysis & report preparation.
Missing Persons Investigations.

Professional Highlights.

Worked directly with Innocence and Exonerations Projects across the country.
Worked alongside multiple criminal defense attorneys across Michigan.
Contributed investigative support for pre-trial and post-conviction cases.
Demonstrated track record of uncovering key evidence in complex cases.
Recognized for clear, organized, and courtroom-ready documentation.

Licensing & Certifications

Michigan Licensed Professional Investigator.
Training in interview & interrogation techniques.
Continuing education in surveillance methods.
Certification in legal & ethical investigative practice.
College education in legal & ethical investigative practice.

Our Mission

At NBI, our mission is simple:
to uncover the truth with integrity, accuracy, and discretion.
We provide investigative services that empower clients with clarity, confidence, and actionable information—no guesswork, no uncertainty.

Why Clients Choose NBI

Transparent Communication

Ethical, legal investigative practices

Clear, thorough reporting

Personalized approach for every case

Trusted by attorneys and individuals alike

Licensed & Experienced Investigators

Ruff's Work Highlighted in Media

Our Michigan Location

Our Michigan office is based in Niles, where we proudly serve individuals and legal professionals throughout the state. As the firm’s investigator, I provide trusted, confidential services with a strong focus on defense investigations and personal cases delivering clear, reliable results.

My Michigan location is easily accessible for clients in the region, and consultations are available by appointment to protect your privacy and ensure you receive the professional attention your case deserves.

See Location

FREE CONSULTATION

Michigan Private Investigator

Over 10 Years

Experience Conducting Investigations