Almost

They underestimate me, they see me as harmless.  That will be a grave mistake on their part once I'm done.  Yesss, it will soon be my time!

My target isn't far from where I am, if I crawl through this Jefferies tube I'll get there quickly and no one will see me, though if they did they wouldn't even think twice about it.
It's like I'm invisible and that works well for me.

Just a little farther, the code I entered will be waiting for confirmation but I don't have long, once they run the usual computer sweep the code will be lost, so I must work fast!
Almost there.

I can see my target, it's right in front of me.  Everything is going to plan, soon, soon I will rule supreme!

"There you are!  I don't know how you keep getting up to this deck, but you really are quite the little explorer"  No!  Not now!
"Mew?  Meow yeow meow!"  Not now, you foolish woman, not now!  How did my owner manage to track me down?  I was certain I masked my life signs!
"Silly cat, it's not safe for you to be wandering about.  Now come on, back to our quarters"  
No!  The computer sweep will be starting any minute!  My plan to drug the captain's hot chocolate and use that youth tonic on the crew via the replicator will fail!
I must get free!  I must!
"Maybe you should use a phaser, stun the furball"  Whoever said that will pay dearly, yess.

One day cats will rule the universe, it is only a matter of time!  Cats will rule!  Ooooo, catnip!