In which episode does Christopher Moltisanti die?

In which episode does Christopher Moltisanti die? Christopher Moltisanti dies in the episode "Kennedy and Heidi."

The episode is the 18th episode of The Sopranos' sixth season and the sixth episode of its second half. It aired on May 13, 2007. Christopher is driving with Tony Soprano when he loses control of the car, sending it into a ditch. Christopher suffers severe injuries, while Tony emerges comparatively unharmed.

As Tony examines the wreck, he notices that Christopher is barely conscious and that the back seat is filled with evidence of Christopher's drug use. Tony then pinches Christopher's nose shut, suffocating him. He later allows others to believe that Christopher died from injuries sustained in the crash.

The episode is important because Christopher's death ends the arc of Tony's troubled protégé and cousin-in-law. Christopher had long been viewed as Tony's possible successor, but his addiction, volatility, and repeated failures had damaged their relationship. The episode also explores Tony's disturbing sense of relief after the killing, making it a major turning point before the series finale.