Private Services

Professional, discreet service. Quality results.

Blackstone Investigations, a division of Blackstone Defense Services Corporation, offers professional executive protection, and investigative and vulnerability assessment services in northern Virginia and worldwide on a case-by-case basis. Our elite investigators have unique backgrounds as special agents and law enforcement officers, counterintelligence agents, intelligence analysts, and technical specialists, and have experience in regional threat analysis, technical surveillance, vulnerability assessment, criminal investigations, threat finance, digital forensics, nursing, forensic psychology, and forensic science. Our personal protection specialists are trained and certified by the Virginia Department of Criminal Justice Services (DCJS), and many have specialized skills such as defensive driving, foreign languages or as EMTs.

VA DCJS# 11-15346                Certified by DCJS to provide Private Investigation and Personal Protection Services                      Licensed.  Bonded.  Insured. 

Domestic Investigations & Protection


  • Background Checks 
  • Infidelity
  • Divorce/Spousal Support
  • Child Custody
  • Missing Persons    
  • Psychological Autopsies  
  • Personal Protective Services                     

Corporate Investigations & Protection


  • Pre-employment Investigations
  • Insider Threat 
  • Internal Theft/Money Laundering
  • Company Investigations
  • Injury/Fraud
  • Undercover Services
  • Vulnerability Assessments
  • Country Threat Assessments
  • Executive Protection

Civil & Criminal Cases


  • Pre-trial Preparation & Trial Assistance 
  • Litigation Support
  • Social Media Investigation
  • Support to Law Enforcement 
  • Traveling Notary & Fingerprint Services