Phantasmagoria is/was a PC adventure game released in 1995 by Sierra, spanning seven CDs (thanks for the memory jog unperson).
This was an adventure game similar to the old Monkey Island series but with a horror theme and incorporating live, digitized actors.
The general story goes that you (Adrienne) and your husband have just moved into the classic scary old house with a dark history. While exploring around, you discover a secret room that has been bricked off (wonder why?), and decide that it's a good idea to go in there and open a little ornate box. Thus releasing some nasty spirit that promptly goes off and possesses hubby.
In the next couple of days things start getting weirder and weirder. The husband is starting to act really hostile and other strange things start happening in the house. One really cool bit is when you hear eerie crying noises from the long since unused baby room and the small rocking chair in the room starts to move.
I never got to play a whole lot further than this as I only borrowed the game. But I presume you continue to solve puzzles and evade your possessed husband while trying to get the nasty spirit back in his box and unravel the mystery of the house.
All in all, I thought this was a very good game for its time. I found it quite addictive and entertaining. I remember playing it long into the dark night, wondering what spookiness was creeping up on me next.