What was the rising action in Floors by Patrick carman?

In "Floors" by Patrick Carman, the rising action includes Leo finding mysterious boxes in the Whippet Hotel, discovering a hidden puzzle on the 13th floor, and unraveling the clues left by the eccentric owner, Merganzer D. Whippet. Leo's quest to solve the puzzle and save the hotel from being sold builds tension and suspense throughout the story.