Later in the weekend, he realized that his organizer and a Walkman--together worth about $200--were also missing.

Jared S. White '00, a Greenough resident, said he thinks he might have seen the thief.

Around 1 a.m. he heard a light knock on his door, but by the time White answered, the person was hurrying down the stairs.

White called out to the stranger and asked him what he wanted. The man responded that he wanted to know if someone by the name of "Brett" was home, White said.

"It was a really strange name, and I just said that no one by that name lived here. Then he just left," White said. "I didn't think anything of it until I talked to Tim [Wang], but then I thought it was really suspicious."

White said he only saw the man from the back, describing him as about 5 feet 10 inches with dark curly hair.

Greenough residents said they had had no reason to expect the robberies in their dorm.

"I haven't seen anyone suspicious," said Wang. "Greenough's pretty small, and I'am sure I'd notice any strange people wandering around."

But less than a week before, McHenry's wallet and key card had been stolen from the Greenough Hall common room.

Sarah A. Cohen '00, a resident of Greenough, said she thought she saw the person who stole McHenry's wallet.

Cohen identified the man as about 5 feet 8 inches, blond and wearing a baseball hat.

"He walked through the room from one door and out the other," she said. "He looked like he was kind of confused and surprised to see people there."

Cohen said the man did not say anything to her and she did not recognize him as a student in the dorm.

McHenry, an oboist, often practices in the basement common room so as not to disturb her neighbors, Evans said.

Evans said McHenry was asleep in the common room for part of the night on Thursday, Feb. 13.

McHenry could not be reached for comment.