ABOUT US

International Specialized Investigations is a private investigations agency licensed by the State of Texas. Our headquarters is located in Greater Houston. We provide private investigative services throughout Texas and beyond. 

Our private investigators are well experienced in the fields of service we offer, such as surveillance, criminal defense, and domestic investigations. We also have bilingual English/Spanish-speaking private investigators. 

International Specialized Investigations is well known for providing investigations all over Mexico. We have been operating in Mexico for over 20 years. We also have a great network of private investigators in El Salvador, Israel, Russia, Spain, and The United Kingdom.