We are a forensic expert consulting firm specializing in injury biomechanics, walkway code compliance & safety, and premises accident reconstruction. John Brault, MS Assistant: Deby Herrera Elizabeth Avila, MS Assistant: Deby Herrera Why Choose Semper Scientific? Over 30 years of experience advising our clients in the legal community. More than 6,000 technical investigations performed. Expert testimony in more than 400 trials. Get In Touch