Your 4 - yes, it would need a lot of planning to fool Sherlock Holmes.  He is a sucker for a damsel in distress, and I felt he was protective of "Faith" so that maybe helped to fool him.  But I was thinking about John's deduction about how Sherlock found the therapist - she would have had to set herself up in business in anticipation of John changing therapists, found an empty property and so on.   It was quite a bit of forward planning and seemingly inside knowledge.  

Now interesting about Sherlock and the real Faith - he seems to set that up as  showdown with Culverton, which all goes wrong when it's a different Faith.  But actually his plan all along, was to put himself at death's door to get John to save him, and to expose Culverton.   He wasn't setting up a Culverton confession in the mortuary, but was planning one for later.   So does that mean that he'd already guessed about Faith?

Eurus killed the terapist. It does not need too much planning, just to know that John is planning to go there. 

What I do not understand is  how could Eurus be in the bus and walk freely whilst Mycroft  was checking her regularly. I suppose Sheringford is the place she was kept, at least according to the translation. 

And why did CS give her the note from his daughter. Wouldn't it be natural to destroy it instead  when he wanted to erase any memory of what he told to the people? 

The deduction of Sherlock might be correct. Eurus is kept is a small flat, she loves cooking as a hobby, is in love with Moriarty, ... I do not remember exactly, I must rewatch it to see if it fits to the rest. 

How could Sherlock know that John would come the the hospital to save him? It was just a coincidence that he found the DVD in time. Had he any backup in the hospital (not only the nurse fan) or second plan? 

Or was Mrs. Hudson given instructions from him where to look, what to give John? 

Preceja wrote:

Eurus killed the terapist. It does not need too much planning, just to know that John is planning to go there. 
 

Yes, of course she did, thanks!  I think she said the body was in the cupboard.

She still had to do some clever deductions get to that point, though.   Surely some inside information?  From Mycroft? 
 

Vhanja wrote:

I'm wondering about those people at the CS meeting. Why did they agree to the drip? 

This was maybe done to illustrate the sycophantic nature of people that surround such unscrupulous people as Culverton... they would even agree with the harm to their own selves to suck up to the rich and famous?
 

I think it was quite real, yes.

Liberty wrote:

Preceja wrote:

Eurus killed the terapist. It does not need too much planning, just to know that John is planning to go there. 
 

Yes, of course she did, thanks!  I think she said the body was in the cupboard.

She still had to do some clever deductions get to that point, though.   Surely some inside information?  From Mycroft? 
 

Not clever deductions, just follow John and find out he has this new terapist. The "bus girl" had his phone number, might be able to follow his calls. I assume she is connected with Moriarty, maybe she is behind him and the more clever of them, so why not. If she was able to arrange broadcasting of Moriarty after his death? 

But in this case Mycroft does not have her under control at all as he thinks.

Was not among the nurses at the CS office a man? The third in the row or so? Is it normal or does it mean anything? 

Rewatching is doing no good, the questions get more

Who is the guy Culvertons daughter/Euros sees in the beginning when she scribbles the letters on the paper? It's not Culverton I think? It's a less bulky guy in a white shirt. Who is that?

Also, if Euros is scribbling the words "need to kill", she means John? Or does the "anybody" have any significance, too?

What if the "one word", the name, was Redbeard?

"I don't know who my father wanted to kill" -> who is she talking about when that is Euros talking and not Culvertons daughter?

But why does she ask then "how can you tell these things from a piece of paper?" Is this Sherlock telling himself he is clever? Does he imagine her in that moment? Is she real? Then why saying that to him? Doesn't she know who he is?

the "Please I have no one else to turn to, you're my last hope", what does it mean? What if it is part of a memory Sherlock has about his sister?
And then he is so agitated when he thinks she is suicidal. Is he talking to himself? He is trying to save her, but the same time, trying to save himself.

He calls her a friend... how so? He never calls anyone friend except John. And it took him ages to admit to that!!

 

Whisky wrote:

And then he is so agitated when he thinks she is suicidal. Is he talking to himself? He is trying to save her, but the same time, trying to save himself.
 

Sherlock deduced that she cuts her wrists frequently. But does she really?