Author Dennis Lehane says he will name character after whoever finds his dog

Dennis Lehane attends the "Shutter Island" special screening after party at Rouge Tomate on Feb.17, 2010, in New York. / Michael Loccisano/Getty Images

Dennis Lehane's dog has gone missing and the author is offering up an unusual reward.

Lehane says he'll name a character in his next book after whoever finds his beagle Tessa, who disappeared from the family's home in Brookline, Mass., this week.

He says on his Facebook page that Tessa jumped a fence at the home, and even though she has been micro-chipped, she was not wearing her tags.

Lehane says Tessa is "smart, fast, and immeasurably sweet."

Lehane wrote "Mystic River," "Gone Baby Gone," "Shutter Island" and other books.