Camelot - Igraine

In the second half of night four, Morgan has assumed the guise of Igraine.  Clumsily, the writers introduce a cherub of an orphan who conveniently is very good friends with the real Igraine and Merlin (1. Would Merlin really be friends with a little boy? 2. Why have we not seen him before?) This just led me to see his fate written boldly in this story because he is only brought in for one purpose - to recognise Morgan for who she is.
Morgan/Igraine meets up with Leontes and lets slip about Arthur and Guinevere acting as if she thought he knew.  I presume this was the whole purpose of this and the last episode.  I am sure there could have been a more economical way of getting to this point?
Morgan then seduces Merlin and they end up in bed together and strangely, he appears to recognise that she is not Igraine, but keeps going anyway. 
Post-coitus, Morgan starts to lose grip on her identity and leaves the room, only for the boy to run across her.  Now why is the boy up at that late hour and why is no one else walking around?  Are there no guards in Camelot?  She accidentally kills the boy (once again, why does no one hear this or why are there no guards in the main chamber?) and then goes to leave.
However, coming in to Camelot at the same time is the real Igraine who has escaped Castle Pendragon by killing her guard.  She was not expecting to see herself standing there and the shock makes her think she is losing her mind.
This was a clumsily written episode.  Only one more night to go.  Hopefully they will get to the point.