Crossword Genius

Protracted story about certain killers? (6)

Ross

I believe the answer is:

serial

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'protracted story' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for serial that I've seen before include "Soap opera, e.g." , "Continuous, perhaps like mulitple killer ( 6)" , "Story made up of consecutive parts" , "Story published in instalments" , "following a characteristic pattern" .)

I've seen this clue in the Evening Standard.
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