"I'm sad we had to leave." Phineas said.

He, Perry and Ferb were heading down the hall of a hotel. Linda had allowed the boys their own room again.

"Colorado was fun indeed." Ferb said. "Especially with Perry."

Perry smiled. "Even though I came with a psychotic alley cat and a trigger-happy platypus?"

Phineas shrugged. "Still fun. Oh, here's our room. Three nineteen."

He put the key in the door and opened it.

"Cool." Ferb said. "The lights turn on when you-"

He stopped.

Both Phineas and Ferb looked equally confused and seemed rooted to the spot.

"Oh." Phineas said.

He slammed the door shut, his eyes wide. He turned and started quickly back down the hall.

"What?" Perry asked, following him to the elevator.

Ferb seemed like he was trying very hard not to laugh. Phineas jabbed the elevator button, and the doors opened.

All three of them got in. Phineas pressed the button for the second floor, and the doors closed.

"There was… a guy in there." Phineas whispered.

Ferb burst out laughing.

Phineas started laughing too, but it sounded more like nervous laughter.

"A guy? In our room?"

Phineas nodded. "He didn't have anything on."

"What?!" Perry asked.

Ferb was rolling on the elevator floor now. "We opened the wrong door!"

Phineas looked at the key in his shaking hands. "Our room was TWO nineteen. Scary the key works for both…"

Perry snickered. "What did he do? Did he see you?"

"I think so." Phineas said. "He was looking at us."

"WE definitely saw HIM!" Ferb said, barely understandable underneath his giggles.

They got out on the second floor and went to room two-nineteen.

Phineas hesitated by the door.

"Want me to open it?" Perry offered.

Phineas handed him the key, and Perry stuck it in the lock, pushing the door open.

"HOLY COW! THERE'S ONE IN HERE TOO!" He shouted, jumping back.

Phineas hid his face.

"Just kidding." Perry grinned. "It's fine, no one's in there. Come on."

Perry knocked quietly on Monogram's door.

"Come in."

Perry pushed the door open. Monogram was sitting at his desk. A man with brown hair, blue eyes and a bushy brown mustache was standing next to him. They had obviously been talking.

"Agent P!" Monogram said, standing up. "Good to see you made it back safely. I'm so sorry about that whole mix-up with the police, I'm still trying to work it out…"

"This is Agent P?" The other man asked. "The one you always talk about? He's very cute."

"The one and only. Agent P, come meet my best friend since childhood, Thaddeus Badley."

Thad shook Perry's hand. "It's wonderful to meet you, Perry. I hear you're an amazing agent."

Perry shrugged modestly.

"He's in a bit of hot water at the moment." Monogram said. "I'm trying to get him out of trouble. He's been blamed for that blow-up on Danville Factory."

"Why?" Thad asked.

"Apparently the suspect was a platypus."

"Now that's just sick." Thad shook his head angrily. "Just because he's the same species, they assume he committed the crime. People think all animals are the same. Well, they aren't. They're individuals with different personalities."

"Exactly." Monogram said. "Agent P, you need to lay low, as you've been doing. I'm afraid it's too dangerous to keep working."

Oz entered the room at that moment.

Ozwald was a small octopus, bigger than Perry, but not very big for an octopus. He had to wear a water device since he couldn't breathe oxygen.

Perry didn't speak much octopus, so he didn't always understand the clicking noises Oz produced from his beak.

"What is it, Ozzy?" Monogram asked.

Oz shook his head and clicked his beak.

"Peter got stuck in one of the tubes AGAIN?" Monogram sighed. "All right. I'll be right there."

Monogram followed Oz out of the room. Perry glanced at Thad, who motioned for him to go with them. Perry obeyed.

"Isn't it nice, the whole family going out to eat?" Phineas said, patting Perry on the head.

"I don't see why the whole family has to include Perry." Candace snapped. She was swatting at a fly who was flying in circles around her head.

"What's the fly doing?" Phineas asked.

"Excuse me." The fly buzzed to Candace. "You are interrupting the Tour de Fly."

Perry translated to the boys, then called the fly over. The fly perched himself on Ferb's napkin and looked up at Perry.

"What's the Tour de Fly?" Perry asked.

"It is a race to see who can win the Cocoa Cup." Said the fly.

"What's the prize?" Phineas asked.

Perry asked the fly the same question.

The fly looked at him. "The cocoa cup, of course." He gestured toward Ferb's cocoa mug.

Perry translated again. "What's your name?"

"Marty McFly." The fly said. "My name used to be Frederick McFly, but after I flew around a movie theater- I go there to eat people's popcorn- and saw Back to the Future, I decided Marty McFly was a much better name."

"What's the course for the Tour de Fly?"

"First you have to fly over Mac-and-Cheese Mountain," Marty said. "Then you fly around the red-haired screaming girl and past the Lake of Gravy. Once you get over Green-Bean Gorge, you land on the Cocoa Cup and have won. Then you drink the cocoa stains on the side of the cup."

"Or you could just fly an inch over to Ferb's cocoa from here." Perry said.

Marty shrugged. "I suppose I could." He flew and landed on Ferb's mug, his little tube of a tongue sucking up the sugar.

"Have you ever heard tell of Dragon Rock?" Marty asked when he had eaten his fill.

"No." Perry said.

"I heard that a huge danger is there." Marty said. "Never go if you can help it."

Perry broke down Doofenshmirtz's door for the first time in months.

Doofenshmirtz looked up from the magazine he was reading. "What the… P… Perry?"

Perry got into a fighting stance.

"Um…" Doofenshmirtz looked around. "Well, you see… uh… I wasn't exactly… planning on you coming today."

Perry stared at him.

"You've been gone, like forever." Doofenshmirtz said, with a bit more resentment in his voice. "And I couldn't just do evil with stupid Sergei. I don't even hate him. I had to request someone I really despised. And he didn't know you came back, either. So if he shows up, it's not really my fault. It's yours."

Peter leapt through the hole Perry made in the wall. He looked around the room and took a step back.

"Peter?" Perry asked.

Peter looked embarrassed.

Perry looked back at Doofenshmirtz, hurt. This was the third time Doofenshmirtz had gone to Peter when Perry hadn't been there.

"Well, you weren't here." Doofenshmirtz said coldly, as if reading part of Perry's thought. "What was I supposed to do? Stand around and NOT do evil? Hello, I'm an evil scientist! It's like, physically IN my title! And like I said, YOU LEFT."

Perry punched him hard in the knee.

"OW!" Doofenshmirtz clutched his leg and grimaced. "What was THAT for?"

Perry turned and stormed out of the wall, ignoring Peter calling after him.

He hoped Doofenshmirtz's knee hurt as much as his "you left".

Perry jumped into Phineas's lap.

"Perry!" Phineas hugged him. "Where were you? You were gone a whole day!"

"Ready for an insanely long story?" Perry asked.

"Really long?" Ferb asked. He was more focused on the television than Perry.

"Well, not really. So yesterday I went up to Doof's. And guess who was there?"

"Doofenshmirtz?" Phineas asked.

"Well, yes, but guess who else?"

"Um…"

"Klimpaloon." Ferb said.

"Peter the panda." Perry sighed and rested his head on Phineas's arm. "Doof said… some things and basically kicked me out. So I went downtown to find some paper because Pajamas likes to chew it, and then someone grabbed me and handcuffed my hands behind my back. The police. I'd forgotten I was still suspected of… building-exploding. They dragged me off to Danville Prison and locked me in solitary confinement."

"No!" Phineas said.

"Yeah, unfortunately. The only thing in that cell was a bed. Monogram called them and tried to bail me out. When he couldn't, his friend Thad came down."

Phineas's eyes flashed for a moment.

"Don't start on that 'trust' thing. He did a great job arguing with the police. Finally they accepted I hadn't done it and let me out. I just hope Prince stays hidden, wherever she is. They're looking for her."

"Her, specifically?"

"No, but if I saw her, I'd think she'd done it, too. What platypus carries a gun and tries to look like a Tokyo street sign? Good news is, I can work again. Bad news is, Doofenshmirtz apparently doesn't want me to."

"Good, then." Phineas said. "You hated him anyway."

"You don't understand. When you hate someone, and they hate you back, it creates a relationship."

"I heard in the message room today…"

Perry glared at Phineas.

"No, just listen. I heard Thad talking on the phone to some person. He was talking to them about a guy named Percy."

"My father's named Percy, but I doubt Thad knows that." Perry said.

"Thad said Percy didn't seem close enough to something." Phineas squinted, trying to recall more information. "Thad said… 'Keep looking… finding what you can… we can't do anything with him poking around. If he doesn't know, he'll probably find out'."

"Strange." Perry said.

"I'm telling you-"

"I'll look into it." Perry said, more to stop Phineas from talking than anything else. "It does seem weird, I agree. But you need to take that tape recorder out of that conference room, got it?"

"I did." Phineas said. "I put it in the message room instead. That room with all the phones."

Perry smiled and shook his head. "Loopholes. Smart."

Ferb patted him.

They all stared at the TV in silence, watching Kenny Kennington escape from prison for the twenty-third time.