It will be interesting to see how Walt talks his way out of this,with Hank finding the book.It was interesting when they were talking earlier and Hank talked about leaving the job so he didn`t have to deal with the "monsters" in the drug trade and Walts face changed,then he bent down and came back up dressed for the meth cook.its like he doesn`t care what anyone thinks anymore.Plus the talk with Jesse and how he sold his share in Grey Matter for 5 grand and now its worth billions,i don`t think his ego will let him leave the drug business behind.He just feels his intelligence is worth a lot more than a couple of million and even though he said he was out,he`ll end up back cooking meth.