Professor Grubbly Plank took a seat at the staff table where Hagrid usually sat. That meant the first-years must have crossed the lake and reached the castle, and sure enough, a few seconds later, the doors from the Entrance Hall opened. A long line of scared-looking first-years entered, led by Professor McGonagall, who was carrying a stool on which sat an ancient wizards hat, heavily patched and darned with a wide rip near the frayed brim.