Lt. Columbo et al

• Whodunit V.I.P.'s
• P.I.'s
• Investigators, for short
• Clue collectors, for short
• Sleuths, briefly
• Shamuses
• Case workers, briefly
• Hired sleuths, slangily
• Many pulp heroes, in slang

Wikipedia Word definitions in Wikipedia
TECS , formerly known as the Treasury Enforcement Communications System , is used by the U.S. Department of Homeland Security to manage the flow of people through border ports of entry and for immigration enforcement case management. It keeps track of individuals ...