Abby is missing from her lab and the only sign that she had been in today is scrawled across the window in window paint.

...

I WILL NEVER BACK DOWN! NEVER!

THE VALENTINE PARTY WILL PREVAIL! THE CANDY WILL WIN!

...

Wait, someone is coming to wipe it off.

I have NEVER seen Gibbs look that tired - and ANNOYED!

Anyone know where Abby is hiding?