The Onion and other satire w/ layers

Dexter is about a serial killer killer.

When he was a young boy, Dexter witnessed the brutal murder of his mother, and it bent his brain a bit. His foster parent noticed that he seemed to have some psychopathic tendencies, so instead of trying to "fix" him, they just taught him a moral code, that he should only kill muderers who escaped justice.

In adulthood, Dexter works in forensics, helping the police track down murderers, murdering the ones that "get away." There's a lot of blood spatter in this show.

if you havnt watched dexter, hes a vigilante serial killer, that "deals" with people that got away scot free from thier heinous crimes, he also works with Law enforcement which gives him significant clout from suspicion.

It’s about a guy who wraps rooms in plastic.