Ed, his friends, and even his little sister are eager to go to Dinosaur Discovery, but ever since he found the magic coin called Silver Center, strange things happen around Ed--so he is not surprised to find that a blue dinosaur has followed his sister home.

In this story told mostly through letters, Noah Breth's feuding children come to Ghastly, Illinois, to follow a trail of limericks to their inheritance, while Seymour tries to convince Iggy and Olive to let him keep Mr. Breth's dog.

"When ten-year-old Derek and eight-year-old Sam move with their family to Virginia, they have no idea what adventures the summer will bring. As the brothers explore their creaky old house and the deep surrounding woods, they uncover a sixty-year-old mystery of a valuable coin collection stolen from the local museum. Join the boys as they spend their summer running from danger and searching the woods, secret caves, rushing waters, and hidden passageways...