How does mentalist end?

In the series finale of "The Mentalist," titled "White Orchids," Patrick Jane finally confronts Red John, the serial killer who has haunted him throughout the series. After a tense showdown, Jane ultimately kills Red John, finding closure for the trauma he endured. The episode concludes with Jane starting a new life with Teresa Lisbon, hinting at a hopeful future together. The ending emphasizes themes of redemption and moving forward after a long journey of pain and loss.