There were mysteries in the wheel of time books. For example, in The Great Hunt, a blood message were written on the wall of the prison in Fal Dara. Who wrote the message and free Fain? These mysteries were not directly explained in the following chapters, but an answer were implied in the later of the book.
I thought that Lanfear broke in the prison because the Trollish message mean "Daughter of the Night".
I am wondering if there is any website which explain mysteries in wheel of time books? I can check that after I've completed the book and see whether I am clear about the fact.