Would you consider 'Bates Motel' part of the 'Psycho' franchise?
I mean, it does in a way tie in with the other movies...Just because it's a weak movie, doesn't mean it's not part of the series...I think, as bad as it is, it should be considered part of the "Psycho" franchise...
Psycho
Psycho II
Psycho III
Bates Motel
Psycho IV: The Beginning
Psycho (1998)