Solution
The Donut Disruption
Stevie said that he saw Valentino fall past the boardroom window, but if Valentino had jumped from the 3m wide balcony then he would have landed at least 3m from the building.
However Valentino’s body was lying on the welcome mat, just a meter from the door making it impossible that he could have jumped from the balcony as Stevie wanted us to believe.
⭒☆━━━ˋˏ ★ ˎˊ━━━☆⭒
Future investigation would show that Valentino had refused to sell to Stevie, not the other way around, and Stevie had pushed him from the boardroom window.