What ncis episode do you see abby sciuto's coffin?

Abby Sciuto's coffin is seen in the NCIS Season 15 episode titled "Twofer." In this episode, the team grApples with the aftermath of Abby's departure from the show, and her coffin is revealed during a poignant scene at her funeral. The episode highlights the emotional impact of her character's exit and the deep bond she shared with her colleagues.