Signs of the unreliable narrator

One, maintains an internally
-consistent viewpoint and tone 
despite all externally-inconsistent 
events and conditions reported
to the contrary. 

Two, you know the guy (or 
doll) and they're nothing like 
that in real life. Not to be 
confused with audiobook
readers! The narrator is 
actually in the book. The 
reader they hire is not
the same. 

Three, you check in the book 
and there's no narrator in 
there. It's just flat author 
omniscient deadpan reportage. 
This is the surest sign of all.
With the possible tradition
-based exception for The Bible,
no author is omniscient! It's 
a con job - don't fall for 
that ol' wool-pull. 

Four, you wrote it yourself. 

Five, it was written about 
you. 

Six: other. Varies.