When 29-year-old Daniel returned from work one rainy evening, he found a pair of men's shoes outside his apartment door. He smiled. His wife, Vanessa, had told him her cousin was coming to stay for a few days. He unlocked the door, expecting to greet a relative. Instead, the apartment was silent. "Vanessa?" he called. No answer. The bathroom was empty. The bedroom was empty. Then he noticed something strange. The shoes outside the door were gone. He checked the kitchen. Nothing. His wife suddenly walked in through the front door carrying groceries. "You came back early," she said casually. Daniel frowned. "I've been here for ten minutes." Vanessa froze. "What do you mean?" "There were men's shoes outside. I searched everywhere. Who was here?" She laughed nervously. "You must've seen the neighbor's shoes." Daniel wanted to believe her. But that night, he couldn't sleep. The next morning, before leaving for work, he placed a tiny piece of transparent tape across the wardrobe doors. If anyone opened them, the tape would fall. When he returned that evening... The tape was gone. Yet the wardrobe looked untouched. His heartbeat quickened. Someone had definitely opened it. But why?