Ключевые слова: agent, among, attentiveness, bearded, behind, black, books, bookshelf, concept, criminal, curiosity, danger, dark, detective, espionage, evil, face, frighten, goal, handsome, hat, hidden, hide, imagination, killer, library, look, man, mysterious, mystery, peeping, picking, portrait, private, reader, searching, see, seek, serious, sight, sleuth, spy, spying, strange, student, surprise, unexpected, university, visitor, watching,