The most common and most likely answer to this crossword clue is the 6 letter word SAYERS
I've seen this crossword clue in The Daily Telegraph
S
A
Y
E
R
S
More clues leading to the result SAYERS
- Crime novelist speaks about medical drama
- Writer‘s voice has sounds of hesitation
- 14 down’s A.J. on board
- Those who speak with utter hesitation at one point
- Those mentioning mystery writer
- Crime writer succeeded when introducing the ultimate character in Ellery Queen
- Mystery author who’s created a lord
- Female author speaks about Buckingham Palace hostess
- Writer speaks without doubt
- English writer getting letters from Simpson's Ayers Rock address
Buddy explains!

The straight part
We know that "Crime writer" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case crime writer = sayers.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.