1: Could Gibbs make a surprise appearance?

2: Fans are hoping for a Mcgee cameo.

3: Will Abby have a guest spot?

4: Could Ducky make a return?

5: Ziva's father could make an appearance.

6: What about Tony's former partners?

7: Could Bishop or Torres pop in?

8: Fans are speculating on past villains appearing.

9: Will any other NCIS characters make a surprise cameo?

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