Ключевые слова: activity, analyzing, business, clue, clues, crime, criminal, detail, detective, discover, education, evidence, examine, experiment, footmarks, footprint, guide, hat, idea, identity, information, inspect, inspection, inspector, investigate, investigating, investigation, investigator, lead, look, looking, magnifier, magnifying, mysterious, mystery, person, police, private, search, solution, solving, spy, strategy, symbol, track, work,