The most common and most likely answer to this crossword clue is the 10 letter word UNEARTHING
I've seen this crossword clue in The Daily Telegraph
U
N
E
A
R
T
H
I
N
G
Buddy explains!

The straight part
We know that "Bringing to light" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case bringing to light = unearthing.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 UNEARTHING mean?
UNEARTHING verb- To drive or draw from the earth.
- To uncover or find; to bring out from concealment
- To dig up.
- Something unearthed; a discovery.