* Kutner's Struggles: Throughout the season, Kutner had been exhibiting strange behavior. He seemed increasingly erratic, experiencing mood swings and bouts of paranoia. He also revealed to House that he'd been using recreational drugs.
* The Suicide: In the episode "The Dig," Kutner disappears from the hospital. Later, he's found dead in his apartment, with a gunshot wound to the head. The episode is presented in a way that initially suggests a suicide, but ambiguity remains.
* The Ambiguity: House, along with other characters, starts investigating the circumstances of Kutner's death, suggesting that it could have been murder. They discover evidence that Kutner had been receiving threatening emails, and that his apartment had been tampered with.
* The Conclusion: The episode ends with House confronting Kutner's father, who believes Kutner's death was not a suicide. However, the episode itself doesn't provide a definitive answer, leaving viewers to interpret the events.
* The Impact: The storyline sparked debate and controversy amongst fans, with some arguing that the ambiguity surrounding Kutner's death undermined the character's arc. Others felt that the episode's ending was fitting, reflecting the uncertainty and ambiguity of grief.
It's important to note that the show's creators never explicitly confirmed whether Kutner's death was a suicide or a murder. This deliberate ambiguity continues to be a point of discussion among fans.