Helen (Joan Hackett) contacts her lawyer because she's apparently been receiving threatening calls from a crazed woman named Helen. And, according to everyone who's known Helen, she's incredibly unstable and dangerous...so why would Helen contact a lawyer and, if so, why wouldn't the lawyer contact the police? Or why wouldn't they get a restraining order? This really makes the episode a bit confusing. I know if someone was supposed to be threatening me, I wouldn't call my lawyer. Plus, later in the show, the lawyer (Kevin McCarthy) thinks Helen might have done something to the photographer....so why didn't he phone the police? This aspect of the show just didn't make a lot of sense. Someone this vicious, unstable and violent surely would merit a call to the police or District Attorney.
Now when you get to see Helen in action, she does appear to be a total mess. She has a drinking problem and she shows many of the symptoms of what psychologists would label a 'Borderline Personality'. And, whether or not Helen is making these threats, Helen is a total mess...a seemingly dangerous mess.
As for the big twist goes, however, I did figure it out early on...and this is probably the case for most viewers. In light of Hitchcock's film, "Psycho", it's easy enough to guess. Plus, there really aren't too many other options as to what REALLY is going on in the story. Still, it is a fascinating episode....flawed but interesting.