He Turned His Clothing Store Into a Halloween Pop-Up and Sales Went ‘Through the Roof.’ Now It Has 1,500 Locations. Joseph Marver’s dead October sales led him to launch Spirit Halloween, the chain that pops up in empty storefronts every fall. Previous Article Dollar General Is Being Sued by the FTC and 20 States for Charging More at the Register Than on ‘Mislabeled’ Shelves Next Article HGTV Star Kim Myles Bought a 35-Year-Old Salon. Here’s Why Her First Business Move Was to ‘Change Nothing’ — And How It Paid Off.