As any other day on the USS Enterprise, this day started with the captain being awoke by an obnoxious beeping, right next to his head. This time, surprisingly, it was not his alarm clock that disturbed his sleep but his Phone.

Before answering it, he glanced at the clock on his bedside table. The figure 4:23 blicking at him. He sighed deeply as he flipped open the communication device and said, "Yes, Kirk speaking."

"Captain, I believe I should inform you that we have been receiving several reports of crewmembers seeing a … creature; lurking in the shadows within the last few hours. Sir, I believe we may have an intruder on-board."

"I'm on my way," he quickly said, now fully awake and snapped the device shut. While hurriedly getting dressed, Kirk contemplated whether these reports were in the least connected to the recently captured John Harrison, whom he still had to interrogate.

The Enterprise had taken this 'Harrison' man in 8 hours prior, yet, Kirk had not had the … shall we say 'self-control' to talk to the prisoner and not smash his fist into every part of Harrison's body, and now there had already been another disturbance on board. Strange.

When the Captain arrived at the bridge he was met by first officer Spock.

"What do we have, Spock?"

"Captain, as I told you before, we have an intruder on board. The information I have so far gathered from the consistencies of the reports is that; the intruder is female, lurks in the shadows and sings a song that none of the observers have ever heard of. None of the witnesses have actually seem her but have heard her voice and describe it to be somewhat angelic and smooth-"

"Let me stop you right there, Spock. What do you mean angelic and why has no-one seen her?"

"No-one, sir, has seen her because she stays in the shadows and no-one approached her because they seemed paralysed by its' voice which has been described as , and I quote, 'creepy' and 'bone-chilling'." Spock's voice had taken quite a defensive tone as he answered the Captain's questions, as if he had been offended at the interruption. Kirk seemed to take notice and with that in mind he continued their somewhat tense conversation, quickly bringing it to a close.

"Alright then. Ahm, okay. I want a ship wide search. Find her and bring her to a holding cell." Kirk seemed unsure of his words and frankly was a little dumbfounded at the reaction of his crew to a mere voice. What could it be about it this voice that terrified them so much?

It had been half an hour since the Captain had given out the orders to seek for the intruder and they had sought every room and corner of the ship and had found … nothing.

Kirk was starting to get a little enraged. They had even turned on the internal life sign detector to search for any abnormalities, but with no success.

"Maybe, it is not a physical being." Uhura suggested, and seeing Kirk's frustration she elaborated, "Perhaps it is a type of hallucination."

She knew right away it was a silly proposition. The sightings had been exactly the same; even the song she was singing was the same, even the song identical, so impossible to be a hallucination, since the chemicals that cause hallucinations affect everyone differently.

"Yes, and just maybe it's the phantom of the opera." Kirk said annoyed at the lack of progress they were making.

"Captain, perhaps we should consult the prisoner that we already have, it cannot be a coincidence that only hours after his apprehension that there is already another disturbance on board."

The captain was more inclined to agree with Spock's reasoning because it aligned with his own opinion.

"Jim. You can't honestly be considering talking to that psychopath? He's insane! He might just have planned this all along! This could be one of his accomplices, here to help him escape or to set up a trap to take over the ship!" Kirk ignored him.

"Let's go Spock. Uhura, send me a message immediately when there is another sighting!" he got up from his commanding seat and headed for the door. Half way through, he halted, turned and said, "Your coming as well Bones, I want you to do a full physical on him."

Bones seemed surprised, and was asking himself why Jim wanted an examination of the man.

Kirk knew exactly what Bones was thinking and answered the silent question that hung in the room with an almost casual, "The man took out an entire battalion of Klingon soldiers. That is not human; I want to know what he is and what his weaknesses are, understood?" The doctor nodded, slowly, slightly intimidated by the captains statement and then quickly followed him out the door toward the holding cells.

When the trio walked in, John Harrison was standing expectantly, hands interlocked behind his back, a position the first officer also frequently took.

Skipping all formalities, the captain quickly got to the point, as the doctor opened a small hole in the glass wall of the cell and instructed the captive to put his arm through.

The doctor took little note of the conversation while he took the blood but did listen in, intrigued near the end when he was just about to leave to run his tests.

"I am better."

"At what?"

"Everything."

Had the situation not been not so intense, McCoy would have laughed; but the expressions of both the captain and captive were so far away from humorous as they stared at each other, that he did not dare to.

"I am Kahn"

As soon as he uttered the name all the lights in the immediate vicinity went out and the song began…