The NCIS season finale has arrived. An NCIS season finale tease from Diona Reasonover“Team dynamics are going to be challenged because we may not have the leadership that we’re used to,” Diona Reasonover told TV Insider. She appeared in NCIS Season 22, Episode 6, revealing her prior history with Agent Alden Parker. As a reminder, the NCIS season finale is set to air on Monday, May 5 at 9/8c. NCIS Season 22 finished filming, and star Wilmer Valderrama cried.