Question

Unreliable narrators are startling because generally readers expect the storyteller to be ?

Answer 1

Readers typically  expect the narrator to be stable, certain and honest. For example, if a narrator admits that they lied previously and told the reader that the reader would not be able to take them seriously for the rest of the story.

Answer 2

The readers expect the storyteller to tell the whole story truthfully giving all the necessary details to come to reasonable conclusions.