nightmare – n. a dream that frightens a sleeping person : a very bad dream
directory – n. a book that contains an alphabetical list of names of people, businesses, etc.
theme – n. the main subject that is being discussed or described in a piece of writing, a movie, etc.
mission - n. a task or job that someone is given to do
puzzle – n. a question or problem that requires thought, skill, or cleverness to be answered or solved
lounge – n. an official mark that is stamped on paper or on a small piece of wax to show that something (such as a document) is genuine and has been officially approved
seal – n. an official mark that is stamped on paper or on a small piece of wax to show that something (such as a document) is genuine and has been officially approved
typewriter – n. a machine that prints letters or figures on a sheet of paper when a person pushes its keys
off track – n. away from the main point, thought, etc.
tip – n. useful or secret information
challenging - adj. difficult in a way that is usually interesting or enjoyable
detective - n. a police officer whose job is to find information about crimes that have occurred and to catch criminals