The most common and most likely answer to this crossword clue is the 8 plus 6 letter word TREASURE ISLAND
I've seen this crossword clue in The Sunday Telegraph
T
R
E
A
S
U
R
E
I
S
L
A
N
D
More clues leading to the result TREASURE ISLAND
- Animatedly, auntie reads RLS adventure story
- A ruralist's Eden represented in adventure story
- Book from finance departments, that is coming up light
- Children’s story developed natural desires
- , 5 Man, perhaps, with prize book
- As Turner sailed abroad for classic adventure with Hawkins
- Altered Russian novel – one involving piracy
- Novel prize I malign without hesitation
- Unreal disaster involved in tale of adventure
- Book reader insults a novel
Buddy explains!
The straight part
We know that "novel" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case novel = treasure island.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.