hotel detective(n = noun.person) house detective, house dick - a private detective employed by a hotel or retail store;
is a kind of operative, pi, private detective, private eye, private investigator, shamus, sherlock

detective, detective agency, detective novel, detective story, detective work, hotel, hotel bill, hotel clerk, hotel desk clerk, hotel manager, hotel occupancy, hotel plan, hotel room, house detective, motor hotel, police detective, private detective, resort hotel, store detective, telecom hotel