Murderous Hamlet, half-possessed (6)
I believe the answer is:
lethal
'murderous' is the definition.
(I've seen this before)
'hamlet half-possessed' is the wordplay.
'LETHAL' is hidden in amongst the letters.
However, I am not sure how this is indicated.
Can you help me to learn more?
(Other definitions for lethal that I've seen before include "very nasty indeed" , "Deadly, potentially fatal" , "bringing down the curtain" , "Enough to cause death" , "Able to cause death" .)