We provide Key Biscayne’s private estates and legal professionals with discreet surveillance and asset searches.
Key Biscayne’s concentrated high-net-worth residential community and significant international population create demand across several investigative case types. McKinnon Investigative Group handles the full range of personal, legal and corporate investigations across the island.
Serving individuals, families and attorneys throughout Key Biscayne and Miami-Dade County.
Detailed reporting on living conditions, parental conduct, and potential risks.
Trusted by Key Biscayne and Miami-Dade businesses to uncover fraud, misconduct, and internal risks.
Analysis of digital activity and patterns to support legal or personal matters.
Screen potential employees, partners, or personal connections thoroughly.
Identify risks before mergers, investments, or major financial commitments.
Get clarity in sensitive family matters like abuse, dishonesty, or hidden finances.
Uncover the truth behind suspicious claims with thorough surveillance.
Discreet executive protection for high-net-worth individuals, corporate executives, and visiting dignitaries across Key Biscayne and the Miami-Dade luxury corridor.
Confirm or disprove claims with discreet observation and factual reporting.
Key Biscayne’s geography defines its investigative requirements in ways that no other Miami-Dade city does. A single point of entry via the Rickenbacker Causeway means subjects entering and leaving the island are predictable in their movements in a way that mainland surveillance rarely allows. It also means an investigator who is noticed on the island has nowhere to go. Every case here requires careful pre-surveillance planning, knowledge of the island’s residential layout, and the ability to operate without drawing attention in a community where most people know their neighbours.
The island’s permanent population of around 15,000 includes a significant concentration of Latin American professionals and high-net-worth families from Venezuela, Colombia, Brazil, and other South American countries. Many maintain primary residences in their home countries and treat Key Biscayne as a primary or secondary Florida home. This international profile creates cross-border asset complexity in domestic and divorce cases that requires investigative familiarity with both Florida law and international asset structures.
Biscayne is the only Miami-Dade municipality where every person entering or leaving passes through a single toll point on the Rickenbacker Causeway. This geography creates investigative conditions unlike any other city in South Florida.
Subjects cannot leave the island without using that causeway, which creates predictable movement patterns, but it also means that an investigator who establishes a pattern or attracts attention on the island has no discreet way to continue working.
Pre-surveillance planning, entry timing, and the ability to blend into a small community of 15,000 are essential skills for Key Biscayne cases that mainland PI work rarely demands at this level.
The island’s residential communities are tight-knit. Mashta Island is a private residential enclave within an already exclusive municipality. The streets around Harbor Drive and Ocean Lane are quiet and residential, making extended stationary surveillance immediately noticeable to neighbours.
Effective investigation here requires movement patterns and positioning strategies specifically adapted to the island’s geography.
Key Biscayne investigations require specific knowledge of the island’s geography, community dynamics, and the operational requirements of working in a small exclusive community. Call us at (954) 513-7414 or use the form below to discuss your case confidentially.
Key Biscayne’s role as a major hub for Island Tourism and Recreation and VIP activity creates unique security challenges.
Our executive protection services focus on discretion, meticulous preparation, and seamless movement through the Miami-Dade County landscape.
Years of combined experience in the professional investigative field
Successful investigations completed across a wide range of cases
Countries Where We Have Conducted Investigations
Key Biscayne is an affluent international hub with a high-profile population and a sophisticated business landscape. This high-stakes environment creates significant demand for professional due diligence and surveillance services to protect substantial assets, ensure corporate transparency, and maintain personal security.
Key law enforcement and court resources for Key Biscayne investigations and 11th Judicial Circuit litigation:
Practical investigative knowledge for individuals, attorneys and businesses navigating complex personal, legal and corporate matters.



Key Biscayne’s single point of entry via the Rickenbacker Causeway requires a different approach than mainland surveillance. Pre-surveillance planning, entry timing, and knowledge of the island’s residential layout are essential. McKinnon Investigative Group has conducted investigations on Key Biscayne for over 30 years and has developed the operational familiarity that effective island surveillance requires.
Yes. Key Biscayne has a significant concentration of Latin American high-net-worth residents from Venezuela, Colombia, Brazil, and other South American countries. Domestic and divorce cases here frequently involve assets held across multiple jurisdictions. We handle cross-border asset discovery cases and work with attorneys experienced in international asset recovery when cases require it.
Yes. Mashta Island is a private residential enclave within Key Biscayne. All investigative work is conducted from publicly accessible areas in full compliance with Florida law and any applicable community access policies.
McKinnon Investigative Group serves Key Biscayne and all of Miami-Dade County. We cover the full island including Mashta Island, Harbor Drive, Ocean Lane Drive, Grand Bay, and the areas around Crandon Park and Bill Baggs Cape Florida State Park. Contact us for a free and confidential consultation.
Yes. All evidence gathered by McKinnon Investigative Group is collected in full compliance with Florida law and prepared for admissibility in the 11th Judicial Circuit Court, which covers all of Miami-Dade County including Key Biscayne. We provide time-stamped video, detailed chronological reports, and documented chain of custody on every case.
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