Joyce Guy

Soon after his insufferably arrogant father wins the Nobel Prize for chemistry, Barkley Michaelson is kidnapped by Thaddeus James, a young genius who claims to be Barkley's illegitimate half-brother. Motivated not so much by money as revenge, Thaddeus tries to convince Barkley to help him carry out a multimillion-dollar extortion plot against their patriarch.

On Christmas Eve, divorced dad Scott Calvin and his son discover Santa Claus has fallen off their roof. When Scott takes the reins of the magical sleigh, he finds he is now the new Santa, and must convince a world of disbelievers, including himself.