Read Enigma Chapter 2 before reading ahead.
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"Damn, your sister is talented. She really did fool the warden into thinking she was your mom", Vicky said to Sunil.
"Well, yeah, but now I got to explain to her why I was out late", Sunil said as the two walked through the corridors.
"My room?", Vicky asked.
"Yup"

The two sat in Vicky's room and tried to figure out what the sentence meant.

"My dad likes pink bicycles"

Vicky walked back and forth in his room, while Sunil examined the paper. He first had a close look at the paper, then brought it close to his nose as if he was smelling it.
"Looks like the text is written by a female", he deduced somehow.
Vicky walked to him and said while simultaneously snatching the paper from Sunil, "That's enough Mr. Sherlock Holmes. Try to figure out what the text means."
"Why is it cut into a circle? And why did the person who wrote it leave the pencil in the bottle along with the paper?", Sunil whispered softly, completely ignoring what Vicky said.
Vicky slapped his right hand on his forehead and said, "Is that necessary? Focus on the text. Whose dad likes pink bicycles? And pink? Out of all colors? Besides, these days nobody uses a bicycle"
"Why is the pencil so small? Who uses such a small pencil? Even for a kid, it's too small", Sunil asked more questions ignoring Vicky's words.
Vicky started getting annoyed. "Why the hell are you trying to figure out unnecessary details? Maybe that pencil was all the person could find near him while writing. Maybe he was lazy to search for another one."
"But why would he or she send it to us along with the paper? Is that person trying to tell us something?", Sunil asked.
"What would a small pencil tell us?"
"Where would you use this pencil if it were you?" Sunil asked Vicky.
"I don't know. Maybe in a compass.", Vicky answered.
Sunil suddenly looked at Vicky's face. "Compass! That's right!", he said and snatched the paper back from Vicky. "Look at this. It is cut into a circle. And there's a tiny hole in the center where the compass tip was placed. It has something to do with a circle."

Vicky stared at the paper in Sunil's hand for a while. Then he ran to his desk and opened up a map on his laptop. "Sunil, give me a list of the places we visited through the encrypted codes in the last few days", he said.
Sunil listed the six locations and Vicky marked them on the online map.
"Look at this, the six locations form a circle", Vicky said, pointing to his laptop screen.
"The text is written close to the center of the circle in the paper. So, whoever sent us this is pointing to the center", Sunil said.
Vicky instantly took a transparent sheet and placed it on the laptop screen. Then he took a marker and drew a circle on the sheet along the six points on the map. He then drew two approximate diameters of the circle forming an 'X'. This gave...