Emily Watson is not the kind of actress you expect to see in a serial-killer movie. Ever since her Oscar-nominated performance in 1996's Breaking the Waves--as a beautiful young religious fanatic who talks to God while having sex with strangers--she's had critics scrambling for words like luminous. Yet her charms have never been employed for big-budget Hollywood movies, despite an illustrious resume that includes 1998's Hilary and Jackie (for which she received a second Oscar nomination) and a juicy bit in last year's Gosford Park as a rough-edged servant who drops her knickers for the master of the house.
"When the...