This NCIS casting news was actually revealed earlier this month, but in case anyone missed it, popular guest stars Robert Wagner and Daniel Luis Rivas are returning in Season 10.

Wagner, as Anthony DiNozzo, Sr. will return “right around Christmas, in a holiday episode,” show-runner Gary Glasberg says of what is sure to be another memorable installment.

One can't help but wonder what impact, if any, he'll have on Tiva taking things further this year. Also back in NCIS Season 10? Rivas, who debuted last year as Abby's brother:

Pauley Perrette (Abby) shared this photo on Twitter as confirmation that her character's younger brother Kyle in a new storyline that unfolds in the wake of the explosion in the Season 9 finale.

Rivas will appear in an early October episode. What do you think lies ahead for Abby and Kyle, who is presumably still unaware of his connection to the team's forensics wizard?

NCIS Season 10 begins September 25. Mark your calendars!

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.