Movie title help

[kagenaki koe]

i was reading about a movie yesterday and now i cant remember it!

it's a Spanish suspense/thriller. this is what i remember of what was described:

the movie starts of with a lady wearing red, she wakes up bound and gagged (in the basement?) and either her husband or a videotape of her husband comes on and he confesses to murdering 18 people and that she would be his last victim. but only if she loses a game that he had planned.
i think it was a word association game.

in between scenes supposedly shows the story farther ahead, of the police investigating the husband about his missing wife (i think her name is Laura). the police have also seen the guys video confession which he says he was only trying to scare his wife but that she managed to run away.

i think this was a slightly recent movie, since i think it was a dvd review that i was looking at.

does this movie sound familiar to anybody?