After Sympathy for Mr. Vengeance and Oldboy, Korean director Chan-wook Park completes his “revenge trilogy” with this ravishing black comedy about a notorious child killer (the delicate beauty Yeong-ae Lee) released from prison after serving a 14-year sentence. Park is the most vexing talent to emerge from the “extreme Asian” genre, a superb visual stylist whose comic book plots always seem to fight a losing battle with banality. Like “Cut,” his episode from the recent anthology film Three . . . Extremes, this 2005 feature finds him interrogating his own fascination with revenge and ritualized torture, a welcome glimmer of introspection that, combined with the extraordinary color palette, makes this an ideal introduction to his work. In Korean with subtitles.