Completing the Contradiction quest in Crimson Desert is a little tricky. Unlike any previous investigations you may have done, such as Close Threat where you have to give evidence to Shakatu, this one is just a series of two-choice answers.
There are no items involved at all, so which one you pick simply depends on how well you listened to the testimonies of the various suspects during the investigation. I don't know about you, but I'm not always the most attentive with NPC dialogue, so here's what to answer in order to unmask the correct culprit who stole the forbidden book.
