Observations, technical surveillance, research and questioning through to covert and unconventional investigations. We work, for example, on the investigation of insurance fraud, making employees blue, uncovering illegal employment, corporate crime, employee screening - applicant screening, obtaining evidence and exculpatory material, witness tracing, unfair competition, unlawful alimony, child support, marriage fraud, feigned personal use in tenancies, debtor and debtor investigation, verification of misconduct (infidelity, etc.), computer crime, and defense against illegal eavesdropping.