Unexpected things the author had found in graves? (9)
I believe the answer is:
accidents
'unexpected things the author' is the definition.
I can't judge whether this definition defines the answer.
'found in graves?' is the wordplay.
'found' becomes 'id' (I can't justify this - if you can you should believe this answer much more).
'in' indicates putting letters inside.
'graves?' becomes 'accents' (grave is a kind of accent).
'id' going inside 'accents' is 'ACCIDENTS'.
'had' is the link.
Can you help me to learn more?
(Other definitions for accidents that I've seen before include "They do happen" , "Unfortunate mishaps or chance events" , "Unforeseen mishaps" , "mistakes" .)