Disclaimer: I do not own criminal minds, also no Will and Henry or Jack and Hailey in this one.

Chapter 1

After finding 5 dead bodies the team finally figured out the unsub was a man named Vincent Gregory. As they got out of their cars at the address Garcia had given them, Hotch directed them.

"Morgan, Prentiss, Rossi, take the back, JJ, Reid with me"

The agents went their separate ways, Hotch walked through the house with Reid and JJ clearing each room. Hotch came finally to the last door, quietly opening it he saw a set of stairs leading down, he held his gun and flashlight out in front of him as he started down.

"Freeze! FBI!"He shouted as he saw a movement at the bottom of the stairs.

Vince threw something at Hotch as he raced out a side door. A powder filled light bulb exploded against Hotch's bulletproof vest and he had no time to react as he inhaled the powder.

He saw JJ and Reid reach the bottom of the stairs as he collapsed onto the floor.

"Hotch!" Reid cried as he rushed to his boss's side just as hotch started convulsing and JJ ran out through the door. There was nothing he could do as he watched his boss start to get smaller before his eyes.

"Morgan's got him" JJ started as she entered the room and saw a baby lying in front of Reid.

"What?..."

"I'm not sure how... but it's Hotch " Reid started as he carefully picked up the baby and held him to his chest.

JJ looked around the room and found some notebooks, "looks like he was trying to reverse the aging process" The basement was full of chemicals and baby supplies.

Reid quickly found a baby blanket and wrapped the baby up. Hotch looked up at Reid with a forlorn expression and burst into tears.

JJ had found some diapers and a small onesie. "Give him to me" she said as she took the crying baby and laid him down to dress him. Morgan and Prentiss returned with Vince in handcuffs.

"Whoa, where did you find the baby?"Morgan asked

"Believe it or not, that's Hotch" Reid said as he was carefully bagging up the broken glass from the light bulb. "We should get this tested and see exactly what was in it"

Morgan turned on Vince "what the hell did you do?"He yelled "how do we fix this?"

Vince just laughed "You can't fix it." He started "but it should start to wear off in 1-2 weeks" he quickly added as Morgan grabbed the front of his shirt. "When it does start to wear off, he should double in age every day until he's back to his normal age"

Hotch had gone quiet while Vince was talking but now burst into tears again. He did not want to be stuck like this for the next few weeks!

"Shhhh" JJ said as she rocked the upset baby in her arms "it's ok Hotch, shhhh, its ok"

The team decided to split up. Rossi, Morgan and Reid took Vince to the local police station while JJ and Emily took Hotch back to the hotel. On the way the ladies stopped at a store to buy enough baby supplies to last them until they got home. Hotch just cried miserably the whole time.

"Do you want me to install the car seat now?" Emily asked as she was putting the bags into the car

"No the hotel is only 2 minutes away from here so we can do it later after I get Hotch settled"

Hotch was still crying as JJ carried him into the room. She layed him on the bed and leaned over him so he could see her face.

"Hotch you need to calm down. If you still have your adult mind then you know that this is only temporary. You'll make yourself sick if you don't calm down" JJ picked him up again and held him on her shoulder as his cries started to slow down and turned into occasional sobs instead.

"You know that we will all take good care of you until you return to normal" She said.

Emily finished bringing the bags inside and walked over to JJ, "hand him over, I don't have a clue how to make baby formula so that's your job" She laughed.

"What makes you think I do?" JJ asked laughing

After working out how to mix the powdered formula JJ took Hotch from Emily and layed him in her arms. As Hotch saw the bottle approaching his mouth he turned his head.

"Aaron you need to eat, and right now this is the only way" JJ coaxed

Hotch was beyond embarrassed to be in this situation, if only he had reacted quicker and gotten out of the way, then none of this would have happened. He decided that JJ was right and he needed to eat so he closed his eyes and drank the milk and tried to imagine being anywhere but here.

Hotch quickly fell asleep while drinking and stirred when the bottle was taken out of his mouth,

"Quick hand me that pacifier we brought" JJ said to Emily. JJ took the pacifier and gave it to Hotch and he quickly settled down into a peaceful sleep.

JJ laid him on the bed and then went to make some coffee.

"Yes Garcia he's fine...really" Emily was saying " We are leaving first thing in the morning...yes you can go shopping...we'll need enough stuff for the next few weeks until he is back to normal...yes I'll send you some pics...he's sleeping...yes Rossi is going to talk to Strauss...ok, I'll call you later...bye." Emily laughed as she got off the phone "Hotch is going to have everything he needs and more by the time we get home!"

She quickly snapped a few pics of their boss lying on the bed surrounded by pillows and sucking on a pacifier and sent them to Garcia

"OMG, OMG, OMG! He is soooooo adorable! Shopping, here I come!" Came the quick reply.

"When the others get back we will need to arrange who's going to look after him" JJ said as she handed Emily a cup of coffee.

"That will be the hard part" She answered.

The boys brought Chinese for dinner when they returned,

"How is he?" Rossi asked as he looked over at the sleeping baby on the bed as the team sat down to eat.

"He took awhile to calm down, and then he had a bottle and fell asleep and has been asleep since then. What did Strauss say?"JJ asked

"She wants to have a meeting with us all tomorrow when we get back. She was sceptical at first but I think I convinced her that I'm not insane and I'm telling the truth but she wants to see him with her own two eyes and then make a judgement" Rossi replied.

"Well the next problem we have is sorting out who is going to look after him until he starts aging again?" Morgan said

"Well I was thinking that we could all stay at my place, I have plenty of room for us all and I can have a nursery set up for Aaron by the time we get back." Rossi suggested. "That way we are all there to look after him and help out."

"Sounds good to me" they all agreed

Aaron woke up to the sounds of his team talking and started crying as he spat out the pacifier and remembered the situation he was in.

Rossi walked over and picked him up, "hey there Aaron, we were just talking about you. We were saying that it might be a good idea for us all to stay at my mansion and look after you. What do you think?"

Aarons only response was to cry, Rossi tried to rock him but when that didn't work he passed him over to JJ. "I have some calls to make if we want everything to be ready, goodnight everyone."

The others took that as their cue to leave too, "Good luck with Hotch tonight ladies, see you in the morning, if you need anything, call Rossi" Morgan laughed as he and Reid left the room.