Hammer or Spade types

• They're on the case, in slang
• Spade and Hammer
• Private investigators, for short
• Shamuses
• PIs, slangily
• Clue hunters, slangily
• British gumshoes
• Whodunit V.I.P.'s
• P.I.'s

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 ...