Ghost cat: midnight paws

When Christy Blake loses one of her two cats, Midnight, and her boss in what looks like a robbery attempt at her secondhand shop, Memories and Dreams, she thinks it's the end of the world. But Midnight isn't ready to go anywhere just yet, so he comes back as a ghost cat to help her track down his killer. Clearly there is a bond between Christy and Midnight that is too strong to be broken by something as trivial as death.