Coco the dachshund only looks innocent. When Beth, Ben, and friends find a runaway wiener dog with a collar address attached, they think they're just returning a pet - not stepping into a mystery. But Coco belongs to Ms. Roman, a lonely widow with an unbelievable treasure: a rare 1914 Babe Ruth baseball card worth more money than the kids can imagine. And someone wants it. A mob family known as The Poppos sets a trap, staging a spooky séance to trick Ms. Roman into revealing her safe password. Now it's up to the kids, and one trouble-making dachshund to stop a heist, outsmart the thieves, and survive one very weird night. But the chaos is only beginning. A hidden coin. A mysterious ferryman. A fortune teller with a map. A fire tower waiting in the woods... What starts with a runaway dog becomes a full-throttle treasure hunt - full of danger, laughs, clues, and more twists than Coco's leash. Perfect for readers who love dogs, mysteries, and non-stop adventure.