The Billionaire's Curse
Published: 2009 by Text Publishing Co
Level: Middle Years (6-9)
Gerald inherits an enormous amount of money, but with the cash comes a trail of conspirators who may have killed his great aunt. He teams up with Sam and Ruby to unravel the theft of the famous diamond from the British Museum, solve his great aunt's murder, and find the casket which possibly held the Holy Grail.