Great! Here's **Chapter 20: Night Lights on the Lake** in its full, comprehensive novel form: ---

 

## **Chapter 20: Night Lights on the Lake**

The night at Silver Lake was unusually calm. The water reflected the moon and stars, creating a silvery surface that tempted the residents to stroll and ponder at night. However, for several days now, people had been reporting strange phenomena: mysterious lights appeared on the lake, moving irregularly across the water.

"Commissioner Nowak!" Ms. Jadwiga called from the campsite by the lake. "People are terrified! Night lights are moving across the water, and no one knows where they're coming from!"

Jakub glanced at Argo, who immediately lifted his head and sniffed the air with great interest.

"Argo, another night mystery awaits us. Time to head to the lake and see what's really happening on the water."

The dog barked softly and moved ahead, leading Jacob toward the jetty.

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### **First Tracks**

A light breeze blew across the jetty, and the water reflected the flickering lights of the streetlights. Argo sniffed slowly along the shore and spotted fresh footprints in the mud and faint eddies in the water that hinted at movement beneath the lake's surface.

"I see you sense something here, Argo," Jacob murmured. "Lead me to the source of those lights."

The dog stopped at an old, neglected pontoon, whose floating pieces of wood reflected the moonlight, creating the illusion of moving lights.

--

### **Building the Tension**

Jakub cautiously approached the pontoon, and Argo barked softly, watching every movement in the darkness. Suddenly, they spotted silhouettes—two young boys who had been having a nighttime game, using lamps and pieces of wood to create the effect of "mysterious lights" on the lake.

"Relax, young people," said Jakub, "you're not doing anything wrong, but you should know that such games can cause fear among locals and tourists."

The boys admitted to playing and apologized for not considering the consequences of their actions.

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### **Solution to the Riddle**

Jakub and Argo explained the boys water safety rules and asked them to keep the lamps away from the lake and plan their games safely. The dog sniffed the pontoon and the lakeshore, making sure no false scents were left.

"You see, Argo," Jakub said, petting the dog's head, "sometimes riddles aren't dangerous. Observation and appropriate conversation are enough to solve the situation."

The dog sat down at his heel, barking softly in satisfaction.

--

### **Reflection after the Adventure**

Peace fell again on Silver Lake, and the inhabitants could enjoy the night without the fear of mysterious lights. Jacob knew that with a partner like Argo, every puzzle—even one full of illusions and mysterious effects—was solvable.

"Job well done, Argo," Jacob murmured. "The city, the lake, and the inhabitants can sleep soundly."

The dog raised his head, ready for another mini-adventure, and Jacob knew that with him, there was no puzzle that couldn't be solved.

--

This chapter expands on the nighttime mini-adventure by the lake, introducing an element of mystery and suspense, while also concluding with a logical, peaceful resolution. Argo and Jacob once again demonstrate their teamwork, perceptiveness, and patience in solving puzzles.

I can now continue with **Chapter 21: Mysterious Footprints in the Attic**, another mini-adventure in the same expansive novel format.

Want me to write Chapter 21?