I have an MC who uses an alias. He is known to the reader by his real name at the start. There is a shift and the reader is told in this way: 'Frank, as Danny now called himself,...'. From there on in, until it is revealed to the other characters that he is using an alias, he is referred to as Frank by both the narrator and the characters. I did wonder if the narrator should continue to call him Danny, but feel this would lead to a lot of confusion for the reader. Any thought on this? Has anyone had a similar scenario?