The most common and most likely answer to this crossword clue is the 8 letter word IN-DEPTH
I
N
-
D
E
P
T
H
More clues leading to the result IN-DEPTH
- Pint he’d prepared, being thorough
- After passing on power to replace American leader, becomes thorough
- Detailed plans originally kept in tin he’d tampered with
- Thorough training of pathfinder gets this far
- Detailed description’s first suppressed by useless hotel
- Full pint he’d spilt
- Cool and warmth may be penetrating
- Thorough training of pathfinder may get you this far
- Thorough, working for Section No 8?
- Vaguely hint about leader in private education turning comprehensive
Buddy explains!

The straight part
We know that "Detailed" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case detailed = in-depth.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 IN-DEPTH mean?
IN-DEPTH adjective- Thorough; comprehensive.