This is book number 2 in the Josie, Marcus Mystery Shopper series.
Every job has its pluses and minuses. Josie Marcus gets to shoe-shop-but she also must deal with men like Mel Poulaine, who's too interested in handling women's feet. Soon Josie's been hired by Mel's boss to mystery-shop the store, but one step leads to another and Josie finds herself in St. Louis's seedy underbelly. Caught up in a web of crime, Josie hopes against hope that she won't end up murdered in Manolos.