WordNet (r) 3.0 (2006):

shocker
    n 1: a shockingly bad person
    2: a sensational message (in a film or play or novel)

Moby Thesaurus II by Grady Ward, 1.0:

61 Moby Thesaurus words for "shocker":
   Marchen, Western, Western story, Westerner, adventure story,
   allegory, apologue, astonishment, bedtime story, blockbuster, blow,
   bomb, bombshell, catch, chiller, detective story, earthshaker,
   eye-opener, fable, fabliau, fairy tale, fantasy, fiction,
   folk story, folktale, gest, ghost story, horse opera, joker,
   kicker, legend, love story, mystery, mystery story, myth,
   mythology, mythos, nursery tale, parable, penny dreadful,
   peripeteia, revelation, romance, science fiction, shilling,
   space fiction, space opera, staggerer, startler, surprisal,
   surprise, surprise ending, surprise package, surprise party,
   suspense story, switch, thriller, thunderbolt, thunderclap,
   whodunit, work of fiction