Criminal Cases
The Backbone of Quality Criminal Defense
Our passion for criminal defense is unparalleled in the investigative industry. As the top private investigators, we fundamentally believe in everyone’s right to the best possible legal defense. Anyone who’s ever been falsely accused of a crime can appreciate our philosophy. And so can their attorneys. Attorneys in Arizona who are looking for an edge over monolithic prosecutorial powers consistently rely upon Inter-State Investigative Services to help establish and build their cases. Our work with The Arizona Justice Project is just one example of our tireless efforts on behalf of the wrongfully accused.
With over 20 years of criminal defense investigative experience, we’re familiar with all of the court systems in the state. We have a firm grasp on the entire legal process of criminal cases. We know what kind of evidence is needed, which witnesses are paramount, and how to gather every fact in a way that survives judicial scrutiny. The most brilliant legal scholar is powerless without supporting facts. We’re here to help anyone who needs the most effective and efficient investigative efforts on behalf of someone charged with a crime.

While no means exhaustive, below you’ll find a list of the most commonly requested criminal defense investigative services we proudly provide
(click any of the links for a concise overview of our approach to each service):
In-depth Background Investigations
Comprehensive checks of criminal, civil, employment, and financial history to reveal crucial details about individuals or entities.
Dram Shop Investigations
Investigate alcohol-related incidents to determine establishment liability and compliance with Dram Shop laws.
Missing Heir and Adoption Investigations
Trace family histories, locate biological relatives, or confirm rightful heirs in estate and adoption cases.
Service of Process
Deliver legal documents promptly and in accordance with court standards across Arizona.
Secret Shopping
Assess employee behavior, compliance, or service quality through discreet undercover evaluations.
Social Media Investigations
Collect and analyze digital footprints, posts, and online behavior to uncover hidden insights or contradictions.
Asset Verification
Identify and confirm assets such as real estate, vehicles, and bank accounts to support legal or financial actions.
Witness Nullification
Evaluate and challenge the reliability or testimony of opposing witnesses through detailed investigation.
Domestic Investigations
Gather evidence regarding domestic disputes, custody, or family conflicts to help protect your client’s interests.
Photography and Videography
Capture high-quality visual documentation for surveillance, scenes, and courtroom exhibits.
Pre-employment Investigation
Screen candidates with background, reference, and credential verification to protect your organization.
Signed Statements and Affidavits
Provide certified document signing and affidavit preparation by licensed professionals.


