The most common and most likely answer to this crossword clue is the 9 letter word RESIDUALS
I've seen this crossword clue in The Daily Telegraph
R
E
S
I
D
U
A
L
S
More clues leading to the result RESIDUALS
Buddy explains!

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 RESIDUALS mean?
RESIDUALS noun- A remainder left over at the end of some process.
- (in the plural) Payments made to performers, writers and directors when a recorded broadcast is repeated.
- The difference between the observed value and the estimated value of the quantity of interest
- (paranormal) A spiritual presence left behind in a place as a result of a person's death or some other significant event.