The collective hush passing through the packed house inside Google's Building 40 wasn't because of the super-smart teenagers lined up for the finals of the National Geographic World Championship. It was for the host, Alex Trebek, who appeared on crutches.

Trebek, famous for his duties on "Jeopardy," bravely told the crowd that he had snapped an Achilles tendon early Tuesday morning while chasing a suspected burglar through a San Francisco hotel. Later, in another interview, Trebek expanded on what happened, saying that he woke up to sounds of a woman in his room, going through his things. He said he then got out of bed, put his underwear on, and chased the suspect down the hall.

During the chase, Trebek was injured, but he hobbled back to his room to call security. The woman was later apprehended. Trebek says all was recovered, except cash and a bracelet (a gift from his mother). He expects to be in a cast for close to six weeks.

To his credit, Trebek was not only forthcoming in telling his story, but totally fulfilled his duties as host of the Geo' Bee, and even refused to release the name of the hotel.

The Russian team ended up winning the National Geographic World Championship.

According to the San Francisco Police Department report: