Masuka Dexter: Original Sin Here

(to skull) Okay, Betty. Your dental records say you're a tourist. But your jaw fracture says you knew the guy. So... bad Tinder date or family reunion?

VINCE MASUKA (20s), lab coat too big, sleeves rolled up. He talks to a SKULL on his desk. masuka dexter: original sin

A plot where Masuka's leering comment about a female detective gets him formally reported. He almost loses his position but is saved when his forensic discovery (a partial print on a victim's belt) is the only thing that breaks the case. He learns a lesson: he can be weird, but not a liability. (to skull) Okay, Betty

A young Dexter Morgan, 12 years old, struggling to comprehend his Dark Passenger, the entity that drives him to kill. He talks to a SKULL on his desk

Original Sin provides context for long-time fans: