When Aunt Michele's antique shop is robbed, twins Stephanie and Steve, and their cousin, Taylor, help to find new antiques for her to sell and investigate the burglary.
I don't know if it is because the series was written in 2002, but the story seems really out of date. Characters are not that interesting and the plot was a little confusing.
"Marked Evidence is the third book in the Rocky Mountain Mysteries series. The Thompson kids investigate when thieves steal antiques from their Aunt Micheles new shop. The mystery gets complicated when they try to replace the antiques. Set in Fort Collins, Colorado"