There was nothing more information that Torak could get now, ignoring the things that he had already known.
The witch, the vampires and the devils were in the same boat and they had his mate's blood. The last part was the thing that Torak concerned about the most.
What would they do with Raine's blood? He saw that book when he went to the library to rescue her, but he didn't think much about it except to get his mate out of there as soon as possible, safe and sound.
And now, since the book with Raine's blood on it was brought up, he was sure the whole debacle that had occurred inside the Library was planned beforehand.
The reason for the shadow guard to give the grimoire to Raine, was definitely something that Lucifer had planned beforehand. The devil deceived the shadow guard to deceive Raine as well.
This thought made Torak feel restless. He didn't like the fact that his enemy held something that had the potential to harm his mate.