As Tom Riddle, the Stalker, observed Harry Potter's behavior after he had been captured by Grindelwald for a month, he became increasingly intrigued by the boy's ability to maintain a facade of smiles and laughter despite his dire circumstances.

Tom couldn't comprehend why Harry would fake happiness in the face of captivity, and this curiosity drove him to investigate further. From the shadows, he watched Harry closely, studying his every move and interaction.

Tom knew that behind Harry's facade lay a complex set of emotions and motivations. He began to piece together that Harry's unwavering determination to appear strong and unaffected was likely a defense mechanism—a way to protect himself and those he cared about.

Intrigued by the psychology behind Harry's behavior, Tom Riddle decided to engage in subtle conversations with the captive wizard, aiming to understand the reasons behind his resilience. He knew that by unraveling the mystery of Harry's seemingly unbreakable spirit, he might uncover valuable insights that could be used to further his own dark agenda.

As the days turned into weeks and their interactions continued, the Stalker Tom Riddle delved deeper into the enigma that was Harry Potter. The captive wizard's ability to hide his true emotions in the face of adversity remained a perplexing puzzle, one that Tom was determined to solve, even if it meant delving into the depths of Harry's mind and soul.