shocker (n.)

• allegory
• apologue
• astonishment
• blockbuster
• blow
• bomb
• bombshell
• catch
• chiller
• fable
• fantasy
• fiction
• folktale
• gest
• joker
• kicker
• legend
• mystery
• myth
• mythology
• parable
• peripeteia
• revelation
• romance
• shilling
• staggerer
• surprisal
• surprise
• switch
• thriller
• thunderbolt
• thunderclap
• whodunit