Echelon offers the skilled Investigations, Surveillance and Support by experienced Philadelphia Private Investigators who will gather the evidence or deliver the comprehensive court-ready reports you require for any litigation. Our team of Philadelphia private detectives is led by an Executive Director with more than 40 years of high-level investigative experience. Every one of our Philadelphia private investigators will supply you with the evidence or proof needed to take action, or provide peace of mind. From background checks to intricate investigations, our Philadelphia private detective agency delivers. read full review »