NCIS: Origins will go deeper into Gibb’s backstory with more flashbacks that promise to surprise the audience with more unexpected details. NCIS: Origins episode 4 focused on a girl who went missing after witnessing a murder, resulting in an emotional story that brought Gibbs’ painful past to the forefront. His bond with the girl stirred memories of the tragic loss of his daughter, Kelly, and his wife, Shannon, who were killed in a car crash. The episode featured a flashback to 1991, during Gibbs’ final days in Desert Storm, revealing the moment he found out about his family’s tragic deaths.