Does Clara actually know that *Cesar* is the father?
Did the film ever make it clear to Clara that he was the one hiding under the bed and doing all the crazy stuff? Because as I understand it, she was receiving text messages from a random stranger she had no idea about, and in the movie it was insinuated that the cleaning lady's son was the one playing games with her. My question is, did she ever truly know that it was Cesar behind those crimes? Cesar didn't sign off the letter with "So long, Cesar" or anything, so I mean she could think it was any old stranger. Unless the police told her that Cesar was a suspect in her boyfriend's death, and if she was smart enough she put the murder, the letter and Cesar puzzle all together.
What does everybody think?