House of Leaves (again)

After the explorers have departed, the family in the house begins to hear a strange knocking-- three short knocks, followed by three long knocks, followed by another three short knocks. This is the S.O.S. signal. The explorers began randomly knocking and the house has translated their calls of distress. The whole book is starting to get creepy like this. Parts of Johnny's story are getting hard to decipher if he's having an attack or if these things are actually happening. Overall though, I'm really enjoying this book. It's different and it's challenging.