AN: I apologize for how long this chapter took for me to finish and upload. Here is the De-aging to the age of 5, chapter. The next chapter he will be de-aged to 3.

2:47 AM (Psych-mobile)

While Shawn and Gus were on their way from the hospital Shawn said nothing as he began to feel strange – not necessarily bad, just strange. His vision swam in and out of focus and Shawn started to feel as though his strength was slowly waning.

"You okay Shawn?" Gus asked worriedly as Shawn stifled a yawn.

"Hmm, yeah I'm just tired." Shawn answered sleepily. The car came to a stop in front of Shawn's apartment and Gus started to open his car door however, Shawn waved a hand at his friend dismissively.

"I'm okay Gus you don't need to follow me in. I'm just going to lie down and go to sleep." Shawn stated.

"Okay Shawn, call me if you need anything, okay?" Gus asked.

"Yeah, buddy I will." Shawn said as he walked up to the door to his apartment.

"Don't forget about the Thundercats marathon Shawn." Gus called as he started to roll up his window.

"Yeah buddy. I wouldn't miss it for the world." Shawn answered as he unlocked his door without looking back at Gus. He walked in and closed the door behind him. Shawn started to walk towards the couch but he didn't make it before the strange feeling came over him again. The room faded in and out of focus and Shawn felt the last of his strength disappear. Soon, he felt himself falling over onto the hard ground, however; he lacked the energy to brace for his fall. Shawn felt tingling in his chest and arms that quickly spread through his whole body. Then his head began to ache; slightly at first, but gradually intensifying. Shawn grabbed his head in a useless attempt to minimize the pain, which grew even stronger until darkness overcame the young psychic.

3:38 PM (SBPD)

"Has anyone seen Shawn? He was supposed to come over for our Thundercats marathon but he never showed and he's not answering his phone." Gus said anxiously as he burst through the doors of the station.

"Maybe Shawn just forgot about the marathon." Juliet responded soothingly.

"This is Shawn we're talking about. He would never forget the Thundercats." Gus denied vehemently.

"Well, I haven't seen him at all today which is kind of strange because Spencer usually lurks around the station when he's not wanted." Lassiter replied with a small frown. He had been enjoying his Spencer-free day but now he was feeling worried though he didn't express his concern for the younger man. Lassiter sighed as he stood up from his chair gaining Gus, and Juliet's attentions as he did so.

"I'm going to go over to Spencer's. He probably just overslept, which is understandable since he was just released from the hospital today." Lassiter announced.

"I'm going with you." Juliet declared quickly following her partner out the door.

3:58 PM (Shawn's Apartment)

The squeal of tires rubbing against the cracked asphalt filled the air as Carlton's car came to a stop in front of the psychic's apartment. The silence was broken when said detective started pounding on Shawn's door with Juliet by his side.

"Spencer! Open the door." Carlton called as he knocked on the door. Only silence answered the detectives which was quite worrying since Shawn's motorcycle was in the driveway. Juliet swiftly grabbed the doorknob and turned it feeling thankful that it was unlocked. Once the detectives were inside of the building the first thing they noticed was a child-sized arm sticking out of a bundle of clothes halfway from the doorway to the couch. Fearing the worst the two rushed towards the small form on the ground. Juliet removed the shirt from around the child and uncovered a messy-haired brunet child. As Juliet started to remove the kid, she blushed upon revealing that the male child was naked and quickly took the discarded shirt and put it on the sleeping boy. The young boy looked slightly familiar to Lassiter.

"My god, I think it's Spencer." He exclaimed in shock causing Juliet to blink in surprise.

"Wha- What do you mean? How can he be Shawn? Shawn is thirty-five not a toddler." Juliet spluttered in confusion.

"I saw some pictures of him when he was around this age at Henry's place. They look almost entirely identical." Carlton explained. "We can confirm it at the station. Make Woody run a DNA test on him. See if it matches Spencer at all." Lassiter offered scooping up the sleeping child into his arms.

"That does sound like a reasonable offer." Juliet said. "But, how do we know that the kid isn't Shawn's son or a cousin of his?" She asked.

"We don't O'Hara, and we can look it up at the station. He is better off with us than on his own." Lassiter stated defensively.

"Before we take him to the station we should go to my place and change him into some clothes that actually fit." Juliet said softly trying not to wake up the child.

"How come you have clothes that would fit a toddler O'Hara?" Carlton demanded.

"My youngest cousin, Jamie, is about the same size as him and I have some of Jamie's clothes at my place from when he and his sister Kelsey stayed over during last Christmas." Juliet answered.

"You go. I'll stay here with him and look around some to see if I can find out what happened after Guster dropped Spencer off." Carlton suggested.

4:37 PM (Same Location)

Carlton heard the sound of a car's door closing. He glanced at the boy who was just waking up blinking tiredly as he looked around. His eyes stopped on Carlton and a curious light shone in his eyes.

"My name is Shawn and I am five. Who are you? Where's my dad?" The boy rambled. The detective blinked at how fast Shawn was talking before he answered.

"Hi Shawn, my name is Carlton Lassiter. I'm a detective for the SBPD." Carlton responded awkwardly. Shawn's eyes lit up at the last part.

"So you know my dad then right?" Shawn asked eagerly. Lassiter inwardly smirked at the kid's question but, before he could say anything the door creaked acknowledging the arrival of Juliet O'Hara.

"Who is your dad kid?" Juliet asked coming through the doorway carrying some children's clothes, with a pleased look on her face. Shawn jumped up and spun around in surprise.

"Don't worry Shawn." Carlton said in a soothing tone. "This is my partner Juliet O'Hara. She won't hurt you." Carlton stated the young boy even more. The small toddler took in a calming breath before speaking.

"My dad is Henry Spencer. He is a detective for the police station too." Shawn answered nervously looking down at his feet. He didn't see Juliet frown at his response nor the satisfactory grin that crossed the taller detective's face.

"Uh, Shawn, do you know what year it is?" Juliet asked worriedly.

"It's 1982 I just turned 5 a few weeks ago." Shawn responded instantly. Juliet handed Shawn a set of clothes.

"Here put this on. We're going to the station." Juliet said. She glanced towards Lassiter and saw a look on his face that said "I told you so." She rolled her eyes and the group of three headed out the door and towards the car.

7:24 PM (SBPD)

Juliet and Lassiter were at their respective desks watching Shawn as he spun around on a chair at Henry's empty desk. They already called Henry and told him of the situation and that they were waiting for Woody to finish with the DNA results. The elder Spencer was unbelieving at first but was willing to wait for the results before making any decisions.

Woody, smiled cheerfully at the sight of the two detectives as they were watching the object of his thoughts, Shawn Spencer, having fun spinning around on a chair.

"Detectives!" He called to get their attention. Which worked; they spun around anxiously.

"Well Woody do you have the results?" Lassiter snapped impatiently after a few seconds of awkward silence.

"Oh, Yes I do sorry. The DNA test results are a 100% match for Shawn Spencer." Woody reported.

"So whatever Black shot Spencer with de-aged him and now he's back to being a five-year old." Lassiter stated smugly.

"We should call Henry and tell him that the results show that he really is his son." Juliet suggested and froze at the sound of angry yelling coming from Carlton's cell phone. The yelling was cut off with a click as Carlton closed the phone in his hand a let out a frustrated sigh.

"We're on our own with Spencer. Henry is convinced that this whole situation is an elaborate scheme that Shawn cooked up and wants nothing to do with him." Lassiter stated actually looking a little worried. Shawn, no longer spinning around in the chair, was frowning sadly, because he had heard the part about his dad saying he did not want anything to do with him.

"Maybe we can talk to Caroline and see if she has an antidote." Juliet stated hopefully.

"She's not just going to give up an antidote even if she has one O'Hara. She's going to want something in return." Carlton said with a sigh. "I'll talk to her alone. You should get Shawn something to eat and go home. Make sure you don't give him any sweets. If he's exactly like the Spencer I know he'll be bouncing off the walls and won't go to sleep." Carlton ordered.

"Alright, Carlton when you're done tell me what she wants and what she tells you." Juliet said to Carlton. "Come on Shawn let's go get something to eat." Juliet said turning to the five-year old with a gentle smile.

8:30 (Santa Barbara Penitentiary)

There was a grating squeak as the metal gate doors were opened to allow detective Lassiter entry to the grounds of the penitentiary. A tall gruff looking man with a slight limp headed towards the detective hurriedly.

"Detective Lassiter I'm your escort Lieutenant Jarred Rodgers. The prisoner you requested to interrogate is in the visiting area as per your orders. Don't worry she's chained to the desk in case she tries to pull anything." Lt. Rodgers said. The two walked into a dimly lit room with a lone person sitting at a grimy looking table. As Lt. Rodgers said Caroline's hands were chained to the table and didn't appear as though she could move even if she wanted to. Carlton sat in a wooden chair opposite of the woman and narrowed his eyes at her when she beamed at him.

"I'm guessing you're here to talk about your new son, correct detective?" Black asked smile still in place.

"He's not my son." Carlton hissed at the obviously insane woman before he schooled his face in a calm mask. "But, yes I am here to talk about Shawn. Is there an antidote or any way to return him to his normal age?" He asked struggling not to yell at the woman. Her smile turned into a shark-like grin before she responded to his question.

"There is a way to return him to his normal state; however, I want something in return." She stated with a smirk.

"It depends on what you want." He responded.

"I want something rather simple. My own private room I can't stand how loudly my roommate snores." She said with an irritated huff. Lassiter blinked in surprise.

"I'll see what I can do. So what's the antidote?" Carlton asked.

"The chemical compound of the antidote is C7H8N4O2. Don't worry the solution is quite simple." She stated in a dismissive tone.

"You've been a big help" Carlton stated inwardly grinning. He wasn't a genius but he was brilliant at Chemistry and knew C7H8N4O2 was Theobromine, a chemical compound commonly found in chocolate.

The following morning the antidote was administered via Snickers Bar and Shawn was back to his annoying 35 year-old self.

AN: I had to ask some questions in order to get where I was going with this. Thankfully Post U Later was quick to answer my rambling questions about this chapter like whether or not Shawn should remember his past and act normally, and if there should be a cure for Shawn's strange dilemma. Next Chapter is the last of the two De-aging chapters. In that chapter Shawn will be three. However in that one he is going to remember everything and act normally. Have not started on this yet but have some ideas.