The Bobbsey Twins: The Smokey Mountain Mystery — Laura Lee Hope

"Who put the whammy on the whimmy diddle?" Mr. Bobbsey asks the four twin detectives. The find the answer, they fly to Gatlinburg, Tennessee, where mysterious thefts and vandalism at various craft shops threaten to close down Smoky Mountain Market. En route, the Bobbseys meet Detective Dashback, who claims he will catch the thieves before they do!

Can he? The twins worry. Matching wits against him, they search for the elusive trouble-makers, following a trail of intriguing clues--a broken doll's house, missing butterfly carvings, stolen toys, and a bee-stinger warning--which lead to a scary visit to Mystery Hill Park.