The thing about a door is that it always leads to somewhere. In the case of the door he couldn't see, that place was unknown. There should have been nothing on the other side of that wall but dirt. Yet the bright light coming through proved that wasn't the case. Jack left his phone propped up, showing the door on the screen, before heading to the wall again. Pressing his ear to where the door was, he could hear faint voices on the other side. A shiver ran up his spine. He couldn't understand any of the words but he could clearly hear them. He moved back and he couldn't hear them anymore. Scratching his head he leaned against the desk.

He looked at his watch. Over a half an hour had passed since he had messaged Martha and there was still no sign that he was coming. Martha had messaged Jack back to let him know that the Doctor was on his way, but for the Doctor time was irrelevant. He had been hopeful though and made the Doctor a cup of tea and found some biscuits to go with it. yet as time passed the tea grew cold and their was no familiar sound of the TARDIS coming into the hub. He was tempted to message Martha back and ask if she was sure he was coming, but that wouldn't accomplish anything. Neither would just staring at the door. Jack couldn't help but wonder though how long the door had been their, hidden to them. Were the people on the other side aware of the door? If so how many private conversations had they listened into? The more he thought about the door, the more questions he had. On the top of the list, right under where did the door go, he had the question of was this the only door? Were there other doors and if so did they all lead to the same place or did they lead to other places as well.

Curious, Jack took out his black marker and drew an x on the wall where the door was. He kept his phone out as he began to walk the hub looking to see if there was any other doors. He began in the morgue and worked his way up to his office. He wasn't surprised when he didn't find another. In his office, he grabbed the camera they were suppose to use at the crime scenes and headed back to the wall. He took a picture of the wall, using the polaroid camera. The picture printed and he waited eagerly for it to develop.

There was no door on the picture.

Confused he got his laptop and faced the camera on it at the wall. The door showed clearly on his laptop as well. He didn't understand how it didn't show on the camera. He was usually the first who would argue with evidence but in this case he was stumped. Relief filled him though when he heard the sound of the TARDIS materializing and felt the air from her engines. The blue box materialized near the rift computer and a moment later the door opened.

Jack's jaw dropped slightly as he stared at the man who walked out. The last time he had seen the Doctor he had looked almost youthful as he dropped them off in Cardiff. Now, his features were almost hardened and his eyes once again weary from all he had seen. No companion followed him out and Jack wondered if he was traveling alone. He knew Donna had suffered some sort of amnesia and was at home, but he thought for sure that Rose would be with him.

"Your teas gone cold," Jack said. Not sure how else to greet the Time Lord. The Doctor's eyes narrowed slightly.

"Is that all I have been summoned here for is tea?" the Doctor growled slightly. "Martha made it sound urgent and yet all you want to do is share a cuppa. Though I suppose in some cases that would be urgent, but I was busy." The Doctor pulled out his sonic and pressed it to the side of the cup. In seconds, steam rose from the cup and he put the sonic away before lifting the cup and taking a sip. His face scrunched in displeasure of the taste and he set it back down.

"I didn't call you just for a cuppa. Though it wouldn't hurt you to drop in sometimes and let the rest of us know you are still alive." Jack snipped back. "I have been wondering what happened to you ever since Donna reappeared with out her memories."

"How is she?" the Doctor asked eagerly as his eyes turned from the glare to sorrow over his lost friend.

"She is doing well. Still as stubborn as ever from what her grandfather tells me," Jack responded and the Doctor smiled for a moment.

"So why have you summoned me here?"

"Well you see Doctor, I have found a door and I need your help in opening the door." Jack smiled.

"A door?" The Doctor wondered, his voice full of sarcasm. "Did you lose your key?"

"I didn't even know the door existed until about two hours ago. If you could just open the door for me I will let you get on your way." Jack gestured to the wall and the Doctor looked at it for a moment. He then turned to look at Jack. Jack almost felt sorry for the Doctor when he saw the man's confusion. The Doctor was willing to share the joke, if only he knew what it was. Jack handed him the cell phone and on the phone was the door.

Lowering the phone, the Doctor saw the x on the wall. He raised the phone again to see the door. Still thinking that Jack was tricking him, he reached into his pocket and pulled out Martha's phone. Turning it to the camera he he held it up and saw the door once more. Now that was interesting. Forgiving Jack for calling him, he headed eagerly over to the wall.

"I need a new cuppa," The Doctor told Jack as he pulled out his sonic. Curious he began to scan.