3. 'Boardwalk Empire': Owen Sleater in a Box (Season Three, Episode 10)
The murder of Boardwalk Empire's most unhinged mobster, Gyp Rosetti, may have been Season Three's splashiest death, but given the battle lines that had been drawn between Gyp and Nucky Thompson, we figured at least one of them would wind up six feet under. It was the subtle, offscreen killing of Nucky's right-hand man, former IRA soldier Owen Sleater, that had us all jumping up from our couches when his body was delivered in a wooden crate to Nucky's Ritz-Carlton suite – a casualty of the botched assassination attempt on Joe Masseria. The consequences of Owen's murder went beyond gangster reindeer games, though: in the season finale, a distraught Margaret Thompson, whose affair with Owen had resulted in an illegitimate pregnancy, made the heart-wrenching decision to abort the baby.