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SG-1 returns to the safety of the SGC to find something is wrong. The power is out, the gate room is a mess and everyone is missing.

Empty Halls: Sanity?

"In here Teal'c." Carter and Teal'c ducked into a storage room and locked the door. Then they turned off their flashlights and waited. They heard as the footsteps of the colonel and Daniel went by.

"What's going on?" Carter asked, although more to herself than Teal'c.

"I am unsure." Teal'c answered.

"Maybe that smell?" Teal'c couldn't see the major in the darkness but he could easily assume her face would reflect her deep thought. "That's it! Teal'c last time we smelled that we all saw the walls bleeding."

"Indeed."

"We must've been hallucinating! That smell must've triggered it! All we need is..." Carter trailed off and she turned on her flashlight and began searching the storage room. "Ah ha!" She pulled four gas masks out of a hidden box. "Now all we need to do is get one on Daniel and the colonel." Carter said as she secured hers. "Teal'c, did you see the bleeding walls?"

"Indeed."

"Then you should wear one too." With that, Carter and Teal'c left the storage room and searched for their colleagues. They found Daniel first, huddled in a corner, acting much like O'Malley had been.

"Daniel?" Carter asked, and got no response other then some phrases in some other language. "Daniel, I'm gonna put this gas mask on you." He nodded. After about five minutes of the purified breathing, Daniel's sanity returned to him.

"Whoa... that was strange."

"What'd you see?"

"Well, your eyes were glowing like a Goa'uld's." Carter cringed at the memory of her dream. "And Teal'c was dressed in his old first prime outfit." Teal'c raised an eyebrow, the only sign that he too was distressed about the resemblance to his nightmare.

"Where's the colonel?"

"We separated a few minutes ago..."

"Let's find him." The three sane members of SG-1 wandered the halls. They searched everywhere they could on that floor, but it was the colonel who found them. He snuck up behind them using his black ops learned stealth and had Carter in a choke-hold with a pistol to her head before Teal'c could even turn around.

"Drop your weapons or your god dies! Drop'em!" Teal'c and Daniel complied.

"Sir, listen to me. You're hallucinating!" Carter choked out through her commanding officer's tight hold.

"Stop lying! I saw your eyes glow!" He tightened his grip. "When huh? When!" The colonel paused and thought back to their last mission a week ago. "When she left to take rock samples? You're good, but not that good." His finger tightened on the trigger.

"Jack! Stop! It's Sam! You're seeing things! I was too!" Daniel pleaded.

"He is correct O'Neill." Teal'c tried.

"No! No! No! I'm gonna get rid of this snake here and now! She'd want it that way."

"Sir, you've got to fight this! It's still me! Fight it!" Carter pleaded.

"Carter?" O'Neill whispered after a few seconds.

"Yes sir, it's me. Please put the gun down." He lowered the gun and backed off. Carter then carefully approached him and switched his pistol for a gas mask which he quickly put on. The group waited in silence until the colonel roughly shook his head.

"I think we're starting to figure out what happened to O'Malley."

"Sir? You back with us?"

"Yeah, but I would've staked my life on you being a Goa'uld." Carter cringed. "Com'on, we gotta find everyone else. If they've been breathing this stuff, they might be in bad shape." With that, SG-1 continued upward.

They reached the door leading to sub-level fifteen and found it blasted open. After securing the area, they went up. When they reached the next level they finally saw something new, but they didn't like it. Sub-level fifteen was devastated. Throughout all the halls there were shell casings and debris littering most of the floor area and blast damage on many of the walls.

"Guess you were right Carter, they headed up. It looks like another stand was made here." O'Neill said as he inspected the damage.

"It also looks like they pulled back from here as well." Carter added.

"Why would you say that, Sam?" Daniel asked.

"There isn't anything useful left behind; no ammunition, no weapons, no grenades." Carter explained.

"It looks like we might find answers one level up." O'Neill said and trudged a path through the debris. They began to make their way to the next and hopefully last stairwell when they spotted the shadow darting in front of them again. A few minutes later it appeared behind them. It seemed to be circling them, but not attacking nor making any strange noises. When they were closing in on the stairs, the growling began again, only this time it growled words.

"Tau'riiiiiiiiiiiiiiiiiiiiiiiiiiiii..." The shadows seemed to growl.

"Whatever's out there, please talk to us."

"Daniel! We don't need to talk to it. We need to kill it!" O'Neill scolded.

"Fear... me..." The voice seemed to come from everywhere and pinpointing it was useless.

"Let's head to the stairs." The colonel said and quickly took point.

"Carter..." The shadows whispered.

"Carter, don't listen to it." Her commanding officer ordered.

"Right, sir." They reached the door to the stairs and found it was also blown open. They headed in and began to climb when the voice started laughing.

"Just keep going." O'Neill ordered. When they had reached sub-level fourteen, the laughing died away. They pushed open the door and headed out into the halls hoping this level would provide them with the answers they so desperately sought.

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