Israel
At first, the Captain simply listened. As the boy spoke, Halvar would see the spell begin to take hold. As in, he would see the man's features shift ever so slightly, as if he were beginning to grow receptive. Though, at the mention of Banner-Mare, and the incitement of sweet and warm memories, these heavily clashed with Jgarlof's actual memories. If Halvar had taken a moment to study the man's innermost thoughts, undetected, rather than engage with them unwittingly, he would have known that Jgarlof had been to the Bannered Mare in Whiterun, and had been sweet on a girl there during the war. 

That was before she was captured by a group of Redguards, and dragged back to Hammerfell to answer for her crimes. Since then, as he had no sweet anodyne before traveling to Windhelm to finish the war, he had bitter memories of that place. Of that night.

And so, when sweetness and succor invaded his thoughts, it clashed violently with the reality. Instead of inviting aloofness, Halvar had accrued contrast. Contrast that brought deeper thought to an already powerful will. 

The man snapped free from the charm, his eyes becoming alert, as he looked down at the boy. 

Had the boy just done that? Was it possible this boy was an illusionist in disguise? A wolf in sheep's clothing? Or was it simply a memory of what could have been, incited by his words. 

Though... He had felt himself slipping *Before* The boy had mentioned his name. 

The Captain's scowl grew tense, as he stared at Halvar, and said, "Get out. I know of no such Banner-Mare from my lists, and you'll return to your parents a failure."
Roderick
And with that, he gripped his blade, and began to unsheathe.
Israel
In a motion as quick as lightning, his massive, metal-clothed fist collided with the side of Halsten's head.
Roderick
The man went down like a sack of potatoes, collapsing to the floor, and sending the barracks into a cacophony of noise and excitement.
Israel
His eyes narrowed. Halsten had struck his officer. Over a boy? Jgarlof looked toward Halvar, prepared to interrogate. Morthal was a place of mystics and illusions, devils and witches. Jgarlof knew magic, and was prepared to crack down on any spell craft used against him and his kind. 

Halvar would have to run fast if he did not want to be grabbed and tossed into a chair for interrogation.
John
*"Cripe..." Halvar scowled himself, now fully realizing the tables had been turned against him due to the unceremonious union of bad luck and hasty, hopeful decision making. Halvar could tell by the look in the Captain's eyes that he was beginning to see and understand what was going on, and remaining here any longer would be bad for his health to say the least. The jig was up for now, but thankfully the vampire had worked on a getaway plan for occasions just like this one.* 

*The edges of Halvar's youthful features faded, revealing signs of age that were hidden before, as he swiftly prepared the spell that he was sure he would have to use many times again in the future. With a flick of his wrist and a whispered string of Daedric words, a small beam of sickly green light manifested in his right hand. Before the Captain could strike him, that beam of light would shoot out and hit the floor of the tavern. Halvar would jerk his head aside as the room was suddenly consumed by a flashbang that would discombobulate anyone caught in the light, followed by a thick cloud of smoke to leave them blinded and disoriented, and that smoke cloud would go on for a minute.* 

*That smoke cloud also had a secondary effect. Anyone caught by the smoke would feel the memory of what had happened here slowly fading. It would take about an hour for the full effect to take course, but those with memories not strong or trained would find their encounter with the Vampire becoming more and more hazy.* 

*Said Vampire did not even look back after casting his spell, instead opting to make a full sprint for the nearest alleyway that looked unoccupied. It was a good thing Halvar had taken the time to memorize the roads and alleys of this town earlier, for he would now utilize his knowledge of Morthal's layout combined with his natural athleticism to quickly break from the sight of the guards at the barracks.*