The most common and most likely answer to this crossword clue is the 7 plus 3 plus 5 letter word BETWEEN THE LINES
I've seen this crossword clue in The Guardian
B
E
T
W
E
E
N
T
H
E
L
I
N
E
S
More clues leading to the result BETWEEN THE LINES
Buddy explains!
The straight part
We know that "Where one may read/Where one may read/no man’s land/no man’s land" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case where one may read/where one may read/no man’s land/no man’s land = between the lines.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.