NCIS Season 16: Diona Reasonover Upped to Series Regular!

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Diona Reasonover is not done with NCIS yet. 

Per Deadline, the actress has been promoted to a series regular ahead of NCIS Season 16, and we have to admit, it's one of the most predictable casting decisions of late. 

Reasonover first appeared on NCIS Season 15 Episode 17 as Ducky's graduate assistant, Kasie Hines. She subsequently helped the team on a case following Abbey's (Pauley Perrette) departure. 

Diona Reasonover

Given the similarities in between the job Abbey did, it was only a matter of time before it emerged that Reasonover would be sticking around on a more permanent basis. 

If you watch NCIS online, you know that Kasie helped Ducky pen his memoirs, so she is in the loop about past cases the team has solved. 

Related: NCIS: Pauley Perrette Exits!

If that's not enough experience, then we don't know what is. 

It will certainly make for a different dynamic without Abby when NCIS Season 16 debuts, but some shows require a change every so often to make them feel fresh and exciting again. 

Diona 2

Reasonover joins a cast that includes Mark Harmon, Sean Murray, Emily Wickersham, Wilmer Valderrama, Maria Bello, Brian Dietzen, Rocky Carroll and David McCallum.

NCIS Season 15 continued the show's downward trend, averaging 13 million viewers and a 1.4 rating among adults 18-49 in live + same day metrics. 

Related: CBS Fall Schedule: Which Show is Replacing Scorpion?

There are also some changes on Tuesday nights this fall on CBS. Bull, which has aired out of NCIS for two seasons, will be sent to the revamped Monday line-up. 


In its place, Dick Wolf's FBI will take up residence in the 9/8c slot out of NCIS. 

Okay, NCIS Fanatics!

What are your thoughts on this casting news?

Hit the comments below. 

NCIS returns Tuesday, September 25th at 8/7c. 

Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.

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NCIS Quotes

McGee: All right. Well you should probably know that Abby and I used to date?
Bishop: Ew. Like, each other?
McGee: Yeah.
Bishop: Wait - isn't that a violation of rule 12, never date a....
McGee: It was a long time ago. After we'd broken up, one night I went to her lab. Found a scribbled piece paper; a list. Potential boyfriends had to fulfill certain conditions by a pre-arranged date or else, goodbye.
Bishop: Such as.
McGee: Things started off relatively normal: opening the door for her, flowers, putting the seat down. Then around number 8, it gets uh...
Bishop: What?
McGee: Does she know you have these?
Bishop: Does she know you have these?
McGee: Yeah she wasn't happy when she found out.
Bishop: These are all very specific.
McGee: Yeah.
Bishop: These ideas apply to you?
McGee: No those rules weren't in place when we were together. At least I don't think so.
Bishop: What's with the two month cutoff? Abby's sabotaging herself. I've seen stuff like this before. We have to talk to her.

Tony: One other question, I know you're an expert in English history. And I was just wondering, have you ever heard of Archibald Drummond, the 17th Earl of Trent?
Ducky: The Earl of Trent. No, I can't say I have. Why?
Tony: I was just wondering. Thanks.