Simon Decker and the Secret Formula

Simon Decker lived above a small bakery in Chicago. He worked at a school lab and liked quiet evenings. One rainy night he heard a sharp bang in the hallway, then a quick scream. His dog, Pepper, barked and ran to the door. Simon opened it and saw his neighbor, Dr. Rina Park, drop a metal case and whisper, “Hide this.” Then she disappeared down the stairs.

Chapter 1: The Late-Night Bang

Inside his apartment, Simon locked the door and set the case on the table. The case was heavy and cold. A keypad on top showed glowing numbers. Simon tried 0000, but it beeped. Pepper sniffed the corners and whined. Simon noticed a sticker: “Room 12B—do not lose.” He did not know that room. He decided to keep the case safe and ask Rina in the morning.

At sunrise Simon knocked on Dr. Park’s door. No one answered. He tried again, louder. Still nothing. The hallway smelled like wet coats and coffee. Simon looked down the stairs and saw a fresh scrape on the wall, like something heavy had been dragged. He felt a chill. At the bakery, the owner said, “I saw her leave very early, with two strangers.” Simon hurried back upstairs.

Chapter 3: The Missing Neighbor

Simon searched his own apartment for clues. Pepper scratched at an air vent near the floor. Behind it, Simon found a folded note. It said, “They want the formula. Trust only Mia.” It also showed four letters: M-I-A-7. Simon did not know Mia, but he knew one thing: the numbers looked like a code. He typed 4170 into the case. The lock clicked open.

Chapter 4: The Note in the Vent

Inside the case was a small glass vial and a notebook. The vial held bright blue liquid that shimmered under the lamp. The notebook had simple drawings and one clear title: “S-F Formula.” Simon flipped pages and saw a recipe for a safe battery gel. It could store power for days. He understood why someone would steal it. Suddenly there was a knock—three slow taps—on his door.

Chapter 5: The Secret Formula

Simon hid the case under his couch and opened the door a crack. A young woman stood there with a bike helmet and a nervous smile. “I’m Mia,” she said softly. She showed an ID card from the university lab. “Rina told me to find you if anything happened.” Simon let her in. Pepper sniffed her shoes and relaxed. Mia explained that two men had followed Rina all week.

Chapter 6: Mia at the Door

Chapter 2: A Case with Numbers

Sirens sounded outside, and someone knocked hard again. A man in a dark jacket held up a badge. “Detective Lane,” he said. “We need to talk.” Mia’s face tightened. She whispered, “Rina said the real detective would say ‘North Side’ first.” Simon asked the man a question about the case. The man frowned and stepped forward. Mia grabbed Simon’s arm. They ran out the back stairs.

Chapter 7: The Wrong Detective

Simon and Mia reached the train station and blended into the crowd. They sat on a bench and listened. Simon’s hands shook, but he held the notebook tight. Mia said they must take the formula to Professor Alvarez, who could protect it. The train arrived with a rush of air. As doors opened, Simon saw the man in the dark jacket scanning faces. Simon lowered his cap and stepped inside.

Chapter 8: A Plan on the Train

Inside the train, Simon and Mia moved to the next car and sat apart. Pepper stayed close to Simon’s feet. Through the window, Simon saw the man in the dark jacket step onto the platform and look into each car. Mia texted Professor Alvarez only two words: “Need help.” At the next stop, they slipped off fast and walked into a crowded market street.

Chapter 9: Eyes on the Platform

They reached the university and hurried into a science building. Professor Alvarez opened his office door and pulled them inside quickly. He listened, then locked the door and closed the blinds. Simon showed the notebook and the blue vial. Alvarez frowned and said the formula could be worth millions. He put the vial in a padded box and said, “We keep it safe. Then we find Dr. Park.”

Chapter 10: Professor Alvarez’s Office

Alvarez turned pages slowly and pointed to a tiny mark in the margin. It looked like a small triangle, drawn again and again. Mia said Dr. Park used that symbol for “storage room.” Simon checked the back pages and found an address written in light pencil: “12B—River Lab.” His stomach tightened. Alvarez gave them a key card and told them to go now, before anyone else arrived.

Chapter 11: A Clue in the Notebook

They reached the River Lab and found Room 12B at the end of a quiet hallway. Mia used the key card, and the lock beeped once. Inside, metal shelves held boxes and chemicals. Simon heard a soft footstep behind them. The dark-jacket man stood in the doorway, smiling. Pepper growled low. Mia grabbed the notebook, and Simon kicked a rolling cart into the man’s legs. They ran.

Chapter 12: The River Lab Door

They hid in a stairwell, breathing hard. Mia opened the notebook and shook out a folded paper that was taped inside the cover. It said, “Warehouse by Pier 9. Bring no police.” Simon felt angry and scared at the same time. Mia called Alvarez and told him the message. Alvarez said he would contact a real detective he trusted. Simon looked at Pepper and whispered, “We go.”

Chapter 13: Dr. Park’s Hidden Message

At night they reached Pier 9 and saw a dark warehouse with one light inside. A real detective met them near a truck and showed official ID. He told them to stay low and quiet. Through a side window, Simon saw Dr. Park tied to a chair. The dark-jacket man argued with another man about the vial. When the detective moved in, Pepper barked, and the criminals panicked. Dr. Park was freed fast.

Chapter 14: Pier 9 at Night

Back at the university, Dr. Park drank water and spoke in a tired voice. She said the men wanted the formula to sell it to a private company. Professor Alvarez locked the vial in a lab safe and recorded everything. The real detective took the suspects away. Mia smiled at Simon and said he had been brave. Simon finally exhaled. Pepper got a big biscuit, and the apartment hallway felt quiet again.

Chapter 15: Safe at Last

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