so anon has read a few fics with wesley being a former drug addict, is this canon? even if it isnt anon loves it and has a serious need to go to church so:

someone has kidnapped wesley and knows about his former addiction problems, to get him to talk they get him hooked on heroin again and withhold it.

+ 10 if after fisk rescues him he hides his addiction out of shame/fear (eg fisk has made it clear if he slips he's going right back to the gutter he came from)

+ 100 if it's a desperate darker matt (or dark!karen) who gets him hooked