The most common and most likely answer to this crossword clue is the 12 letter word FIRST-DEGREE
I've seen this crossword clue in The Times
F
I
R
S
T
-
D
E
G
R
E
E
Buddy explains!
The straight part
We know that "Sort of murder, getting a BSc perhaps!" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sort of murder, getting a bsc perhaps! = first-degree.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 FIRST-DEGREE mean?
FIRST-DEGREE adjective- First-degree. Compare second-degree, third-degree and fourth-degree.