DIVOn a walk in the woods, Sean and Brian find a scary footprint/divDIV Sean Quinn does not like the sound of spending a weekend in a neighborhood named Grizzly Hill. Although his friend Alan assures him the development has been bear-free for a century, Sean is not convinced. The woods are thick and dark, and there’s an old grizzly den not far from Alan’s house. And when Brian discovers a strange footprint on a forest path, Sean starts to wish he had stayed at home with Mrs. Peabody, the babysitter. She’s not any fun, but at least she’s not a bear!/divDIV /divDIVBrian decides the print is too small to be a full-grown grizzly, but it could be a cub. Against Sean’s wishes, they follow the tracks into the forest. If there are bears in the woods, Brian wants to know. And if the animal is something even stranger, he can’t wait to find out!/div

DIVOn an island in the Mississippi River, a ghost and his dog stand guard/divDIV When their aunt buys an old, run-down inn on the banks of the Mississippi, Chris and Amy Holt go south to help her fix up the place. They lend helping hands during the day, but at night, they wonder about the island in the middle of the river—a mysterious place where the townsfolk will not set foot. The island was created by an earthquake which shook the ground so fiercely that the river ran backwards, destroying the house of a bitter old miser named Joshua Hanover, and carrying away his precious hoard of silver coins. And according to legend, Hanover’s ghost still roams the island, his phantom dog, Shadow, at his side, searching eternally for his lost treasure./divDIV /divDIVUnable to resist the treasure’s lure, Chris and Amy journey to the island to find out if the stories are true. There they find danger, and a mystery that is far more frightening than they could have ever imagined./div

DIVThe sons of a private detective investigate a crazy art museum caper—and try to avoid a spooky statue!/divDIV Ever since they were very young, Brian and Sean Quinn have helped their father solve mysteries. Even though their dad is a professional detective, he always likes to hear his kids’ opinions. Sometimes they even help him catch a crook! But when a pair of priceless Leonardo da Vinci drawings disappears from the local art museum, their father is stumped, and only the boys can crack the case./divDIV /divDIVThe robbery was an inside job, which means the drawings could be anywhere—even inside the museum. Sean and Brian inspect the premises and get to know the staff. And everything goes fine until they get to the Anubis Room, where the famous Egyptian statue is rumored to come alive at night. The Quinn boys will nab the thief—as long as the statue doesn’t catch them first!/div

DIVWhile on vacation in Oregon, Chris and Sean encounter a meat-locker mystery/divDIV Piney Point is one of the most beautiful places Sean and Brian Quinn have ever seen, but as far as Brian is concerned, it’s not half as pretty as Jennifer Hicks. And getting to know the hotel manager’s daughter while his younger brother goofs off in the pool sounds like the perfect vacation. But when a string of thefts upset Brian’s new friend, vacation is over, and the Casebusters spring into action./divDIV /divDIVLarge amounts of expensive meat have been disappearing from the Piney Point kitchens, and Jennifer’s dad can’t figure out who’s the thief. Could it be the bellhop? The chef? Or even the security manager? Brian and Sean had better figure it out quickly, or they’ll end up just like the missing steaks—dead meat!/div