Poor works in dodgy sci-fi causing one to crash (9)

I believe the answer is:
soporific
'one to crash' is the definition.
I can't judge whether this defines the answer.
'poor works in dodgy sci-fi' is the wordplay.
'works' indicates an anagram (work can mean to twist or convulse).
'in' is an insertion indicator.
'dodgy' indicates an anagram (a dodgy or wrong order of the letters).
'poor' anagrammed gives 'opor'.
'sci'+'fi'='scifi'
'scifi' with letters rearranged gives 'sific'.
'opor' put into 'sific' is 'SOPORIFIC'.
'causing' is the link.
Can you help me to learn more?
(Other definitions for soporific that I've seen before include "Causing sleepiness" , "Inducing mental lethargy" , "Sedative" , "Inducing drowsiness or sleep" , "making one nod" .)
