Author Dennis Lehane is offering an unusual reward for the person who finds his family's beloved missing beagle: He'll name a character in his next book after whoever finds Tessa, who disappeared from the family's home in Brookline, Mass., this week. He says on his Facebook page that Tessa jumped a fence. She was not wearing her tags at the time, though she has been microchipped. Lehane wrote Mystic River, Gone Baby Gone, and Shutter Island, among others. (More Dennis Lehane stories.)