The most common and most likely answer to this crossword clue is the 9 letter word SNAPSHOTS
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More clues leading to the result SNAPSHOTS
Buddy explains!

The straight part
We know that "brief summaries" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case brief summaries = snapshots.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 SNAPSHOTS mean?
SNAPSHOTS noun- A photograph, especially one taken quickly or in a moment of opportunity.
- A glimpse of something; a portrayal of something at a moment in time.
- A file or set of files captured at a particular time, often capable of being reloaded to restore the earlier state.
- A quick, unplanned or unexpected shot.
- A quick offhand shot, made without deliberately taking aim over the sights.