He believes wife and daughter are dead and then commits suicide.

Hello!

I recently watched a movie where in the end (almost sure it was the end of the movie) the guy returns home and when he sees his wife and daughter dead (not sure if he had one ow two daughters). He kills himself because of that but it was just an illusion (I am not sure if it was something supernatural or if he was just crazy) but right after he kills himself his wife and kid (or kids) get home.

Could someone please help me to remember the name of the movie? Maybe it is a series, but I am almost sure it is a movie.

Thanks!