| mind-boggler(noun, challenge, question, puzzle, example) |
| murder mystery |
| mystery(noun, challenge, question, puzzle, conundrum) |
| novelette(noun, story, tale, fiction, potboiler) |
| novella(noun, story, tale, fiction, potboiler) |
| page-turner(noun, anxiety, confusion, doubt, uncertainty) |
| paperback(noun, story, tale, fiction, potboiler) |
| poser(noun, challenge, question, puzzle, example) |
| potboiler(noun, anxiety, confusion, doubt, uncertainty) |
| puzzle(noun, challenge, question, mystery, conundrum) |
| puzzler(noun, challenge, question, puzzle, example) |
| query(noun, challenge, question, puzzle, example) |
| riddle(noun, challenge, question, puzzle, mystery) |
| sixty-four thousand dollar question(noun, expression, idiom, challenge, question) |
| stickler(noun, challenge, question, puzzle, mystery) |
| stumper(noun, challenge, question, puzzle, example) |
| suspense(noun, anticipation) |
| suspenser |
| teaser(noun, challenge, question, puzzle, example) |
| twister(noun, challenge, question, puzzle, mystery) |