Continuity mistake: When Tim gets stabbed, the killer's silhouette shows that he's holding his knife overhand. When he stabs Tim, he's holding the knife underhand.
Plot hole: Given the store's being bought by a retail chain like Kroger's there's no reason Bill's partner can't sell him his share in it, get half the price they're receiving for it then have Bill make quarterly payments to him. They could've also got the new owners to keep Bill on as manager as well as keep their employees or void the sale.
