Reveal of face too early in pic
Did anyone else think that Mr. Sardonicus' grimaced face was seen too early in the movie? You had the dad's face, which was fine when IT was revealed, but I think they should have waited for the son's new look (rock that runway, Mr. S.!) A bit later on. When he first goes into the house, before seeing his wife, there's a dark shadow covering his face. Then 15 seconds later, TA-DAAAH!
IMHO, the scares that the dad's face reveals is enough for most people to sustain the horror element for a while, so they don't need Sardonicus's ugly mug so shortly after. 15 minutes more would have been better. Castle could have worked around it for that length of time.
ALSO, since the viewer doesn't know in what way his face was messed up makes it all the more suspensful.
(Despite this one thing, the movie is terrific, and Castle was a genius. It is my favorite of his films.)