Although the show moved away from the Ziva plot in subsequent episodes, “Mona Lisa” seemingly revealed that Season 16 isn’t done with her.
Ziva didn’t appear in any scenes set in the present, but she left a message for Bishop revealing that she is indeed still alive.
NCIS dropped a bombshell on longtime fans earlier in Season 16 with the reveal that Ziva David is not dead after all, despite what seemed to be the confirmation of her death back in Season 13.