During the “Now” timeline of “Culprits,” there’s a relatively brief scene where our lead, Joe (Nathan Stewart-Jarrett) is held captive. Tied to a chair and fearing the worst — that the unknown goon squad picking off his peers, one by one, has finally caught up to him — Joe is petrified… until his captor starts talking. His posture, his intonation, his vernacular. He’s just not good at making threats. Professional killers don’t have to overextend themselves when making a point. They’re killers. They will just kill Joe — or torture him or otherwise infringe upon his well-being in a way that’s inescapable — if he doesn’t do as he’s told. But this bozo, even before he dumbly identifies his boss (who’s nowhere near as scary as the shadow organization of assassins Joe’s really worried about), he clearly isn’t a killer. He might be a...