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Ben and Tonya Mezrich celebrate new children’s tome with Seaport bash

Josh Reynolds for The Boston Globe

By Globe Staff 

Writing’s become a family affair for Ben Mezrich and his wife, Tonya. The couple celebrated the release of their first book together with a party Monday night at Kings in the Seaport. Titled “Charlie Numbers and the Man in the Moon,” the children’s tome tells the story of Charlie, a math whiz who is recruited by a mysterious woman who’s investigating the theft of a box of moon rocks from NASA’s vault at the Johnson Space Center.