Spoil grand book, in short (5)

'short' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'spoil grand book' is the wordplay.
I cannot really see how this works, but
'grand' could be 'g' (G is short for grand as in a thousand) and 'g' is present in the answer.
'book' could be 'obad' (I have seen 'short book' mean 'obad' so perhaps 'book' could also mean 'obad') and 'obad' is located in the answer.
No letters remain.
This explanation may well be incorrect...

'in' acts as a link.

Can you help me to learn more?