The most common and most likely answer to this crossword clue is the 11 letter word PAGE-TURNER
I've seen this crossword clue in The Times
P
A
G
E
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T
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R
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R
More clues leading to the result PAGE-TURNER
- Summon artist to produce thrilling work
- Compelling work, foremost of paintings by mature English artist
- Eg pianist’s assistant gripping book?
- Summon artist that’s difficult to put down
- A pure gent terribly close to disaster in exciting book
- Urge parent to order thrilling book
- Contact artist for exciting work
- Urge parent to circulate exciting book
- Urge parent to reword thriller
- Gape at an exciting book
Buddy explains!

The straight part
We know that "Eg pianist’s assistant/gripping book" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case eg pianist’s assistant/gripping book = page-turner.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.
What does PAGE-TURNER mean?
PAGE-TURNER noun- A written work, usually a novel, which is sufficiently interesting or suspenseful to keep the reader 'turning the pages'.