riddle; puzzle; enigma; enigmatic; mysterious
to be enigmatic; to be puzzling; to be wrapped in mystery
to pose a riddle; to hint (at); to drop a hint
confusing set-up; puzzling method
Harry Potter and the Half-Blood Prince
mystifying; puzzling; perplexing; baffling; bewildering
dyeing pattern incorporating a riddle
enigmatic; puzzling; mysterious; wrapped in mystery
The Spiderwick Chronicles (film)
The Mystery of Marie Rogêt