Michael Weatherly, who played Tony DiNozzo on NCIS, left the show after season 13. His departure was influenced by the loss of the dynamic between Tony and Ziva, as well as Weatherly wanting to pursue other projects. He quickly moved on to star in CBS' legal drama Bull, which recently ended after six seasons. While there is hope among NCIS fans that Weatherly will return, it is uncertain if and when that will happen. Despite leaving NCIS, Weatherly's contributions to the show were significant.