He infiltrates groups producing bedlinen (6)
I believe the answer is:
sheets
'bedlinen' is the definition.
I can't judge whether this defines the answer.
'he infiltrates groups' is the wordplay.
'infiltrates' indicates putting letters inside.
'groups' becomes 'sets' (a set is a group of things).
'he' put inside 'sets' is 'SHEETS'.
'producing' acts as a link.
Can you help me to learn more?
(Other definitions for sheets that I've seen before include "Flat pieces, of cloth or paper say" , "She set them on the bed" , "Bedclothes to be found on ships?" , "Leaves" , "Bed coverings for the sailor's ropes" .)