The men, David Waterhouse, of the Sydney racing family, and his accountant Tony Tighe, had arrived at Governor Phillip Tower to mop up another mess. What they didn't know was that within 30 minutes of entering the building the foundations for the biggest insider trading allegation in Australian corporate history would be laid — the short-selling of $55 million of blue-chip stocks by Merrill Lynch in the next four days. Merrill Lynch strongly denied the allegations.