what effects did huck experienced when he came across the criminals

The Duke and King spin all kinds of lies about themselves. It isn't long before Huck figures out that they are full of lies. Huck is a little weary of them because they are thieves but initially they seem like clowns more than anything else. Later Huck realizes just how sinister they are and is rather scared of them.

what chapter is this

Check out chapter 19