The Walled Flower (Victoria Square Series #2) in Bloomington, MN

If Katie Bonner's late husband hadn't invested all their savings in the crafts fair Artisans Alley, the Webster mansion could have been
hers
to remodel into a bed-and-breakfast. Instead that dream belongs to another young couple. But that dream becomes a nightmare when a skeleton is discovered sealed in the walls of the mansion. The bones belong to Helen Winston, who went missing twenty-two years ago. Heather's aunt, a jewelry vendor at Artisans Alley, asks Kate for help finding her niece's murderer. The case may be cold, but the killer is very much alive-and ready to go to any lengths to keep past secrets buried...