"And then? Where did Regulus go?"
"Then..." It seemed to touch upon a painful memory for Winky. In a hoarse voice, the house-elf said, "Winky told Master Regulus everything. Young Master told Winky to hide, and Winky obeyed and stayed hidden in the kitchen cupboard..."
"Then one day, Young Master Regulus made Winky take him to that cave..." Professor Dumbledore held his breath and listened closely. "Young Master Regulus got into the small boat and went to the island, and he ordered Winky!"
Chapter 45