the orphanage ending ? (spoilers)Watch this thread
...she finds her son in the cellar then what ? is it that he is dead and when she takes his drugs she also dies and joins the ghosts as seen in the ending ? if not then what ?
Something like that.
Whether or not there really were ghosts is entirely up to the viewer, like Pan's Labrynth.
What underpins the narrative is the difference between the perspectives of someone young and someone old.
We see the son (Simón), who uses his mind to develop and create the imaginary characters who are his 'friends'. This is basically reasoned because he has moved away from his real friends when departing from his old home.
The main enigma that is posed to both the viewer and the mother is the 'Believe it and you will see it'. This turns the obviously original 'See it to believe it' on its head, and suggests the differences between the young and the old - someone who is young can much more easily utilize their imagination and believe something is real.
Through experiences in life, someone who is older has reason to understand that you have got to see something to believe it is real. This is what causes the difficult relationship between the mother and the son and ultimately leads to the sons, initially unknown and when discovered, deeply thought-provoking death.
It is when she is desperately looking for her him (at the party) that she goes into the cupboard and knocks the metal bars into the wall, blocking the door that Simón went through to get into the cellar. In the night-time the mother hears knocking as he tries to get out of the cellar and the subsequent crash is (as we discover towards the end of the film through a flashback) Simón falling through the staircase and consequently dying.
When the mother starts to put the orphanage to its original state, this indicates how she is trying to take her sons viewpoint 'Believe it to see it'. It is when she does this that she is led to the cupboard and uses the handle to open the door and find Simón. Initially her imagination is what we are shown, as Simón wakes up fine. Through realisation however, the mother sees her son lying on the floor, decomposed as she takes off Tomás' mask from Simóns face.
The motif of 'Believe it to see it' is further expressed when the father finds the necklace he lent her which she said she would return to him once she finds their son. He sees it on the floor and smiles as he realises that she found him.
Sorry if it's a bit muddled up or confusing, I haven't seen it in a few months!