Hawaii Five-0 is property of CBS and its creators.

A/N: YZD and Nieceyluvsfanfic most recently, and others earlier, wanted stories where Ninja and Bullet stop home intruders. Here's Ninjas tail-erm, tale. :)

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Ninja was instantly alert when he heard the footsteps on the porch. The cat could tell they—whoever they were-were trying to be quiet, but his sensitive hearing could pick them up clearly, even from where he was upstairs on Steve's pillow. Ninja looked at his human, but the man was sound asleep. That was unusual—Steve couldn't hear as well as Ninja, but sometimes it seemed like it.

The cat crept downstairs, senses on high alert, wondering who dared invade his territory. It wasn't Danny—Danny was anything but quiet, and Ninja knew Danny's footsteps well. Anybody else wouldn't be calling this late at night—it was a time for cats, not people. Whoever they were, they had to be up to no good.

Ninja was crouched under the couch when the door opened. A tall, heavyset figure dressed all in back cautiously stepped into the house, another, similarly-clad figure behind him. A narrow beam, as though from a flashlight mostly covered by cloth, penetrated the darkness. Ninja laid his ears back and hissed, but the humans didn't hear him.

As the humans ventured farther into the house, Ninja darted in front of them, causing the one in the lead to trip. "Fuck!"

"Quiet, he'll hear you," the other one admonished.

"Nah, he won't wake up—there was enough knock-out juice in his takeout to have him out the whole night."

"Yeah, but are we sure the delivery boy delivered it?"

"Oh, yeah. We had him terrified. He would have done anything we ask, let alone his job."

"Still, we better be quiet—and quick. Grab the dough and get out."

"Right. There was a pause. "Where do you think he put it?"

"I don't know. Look for a safe or something."

The two men began prowling around the living room, shining their dim lights on the wall. Ninja wasn't sure what they were looking for, but he was sure they were up to no good. He leapt up on the table, arched his back, and let out an inhuman shriek.

"Shit!" Both men jumped, and the flashlight beams darted frantically around, looking for the source of the sound. One of the beams landed on Ninja. "It's just a cat."

"Yeah, but it's a black one. Aren't they bad luck."

"That's just superstition. Keep looking."

Ninja was displeased. He did not like these two buffoons in his territory. Where was Steve, anyway? He should have woken up by now. These goons were being anything but quiet, and Ninja's wail would have woken the dead.

Ninja crouched on the table, tail swishing, until one of the men came close enough for him to leap onto the man's shoulder, digging in his claws.

"Fuck, fuck, fuck, get it off me!" the man screamed, reaching behind him, trying unsuccessfully to detach the angry cat.

The other man grabbed Ninja and tore the cat off his companion. Ninja let out another bloodcurdling shriek and flailed his limbs, latching onto the closest surface. He was pleased to discover it was the second man's face. "Yooooowwwwwwcccchhhhh! It's a devil! Get it off!"

"No way, I'm not going near that thing!"

The second man managed to detach Ninja and hurled him to the floor as thumps erupted from above. Finally, Steve was awake. He came charging down the stairs, slightly sluggish, but gun out and steady. "Five-0, freeze!"

Ninja hissed, reinforcing the order. The men immediately put their hands up. "We surrender! Just call off your devil-cat!"

Steve spared a glance for Ninja. "Devil-cat, hunh? Looks like you caught a couple of live ones. Good boy."

Ninja mrrpped happily and began cleaning the blood out of his claws. All in a night's work for a Ninja guard cat.