As you reveled in the rhythmic sway of the swing in the lively kids' park, you jotted down observations in your notebook. The crisp air carried laughter and playful shouts.

Suddenly, a firm hand halted the swing's motion. Startled, you turned to find a mysterious figure clad in a motorcycle helmet, gripping a gleaming knife. The once joyful park now felt eerily ominous.

"..."