The book 'is riddled with' mistakes. [=the book has many mistakes]
Stop speaking in 'riddles'. [=stop speaking in a confusing way]
The first person to solve the 'riddle' wins a candy bar.
(..) Something happened to you in Algeciras and you have not been the same. What happened to you? I wish I could say. Why don't you try? I don't want to be imprecise. ~ It's not a riddle. ~ No. It's a truth. I just don't know what the truth is. The gods haven't revealed it to me. Not yet anyway. Egil... (..)2017 TvShow: Vikings Title: Revenge Season: 4 Episode 18