There's a danger in this paper, I'll be bound! (5)
I believe the answer is:
peril
'there's a danger' is the definition.
(peril is a kind of danger)
'this paper i'll be bound' is the wordplay.
'PERIL' is hidden within the letters.
However, I am unsure how this is indicated.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for peril that I've seen before include "Danger, jeopardy" , "Danger of serious kind" , "Danger, hazard" , "Quest" , "Great danger" .)