The Lost Collies of Silverhedge - A Foxglove Corners Mystery, #26

Collie breeder Madselin Rivard was dead, leaving her prized, valuable collies uncared for in their kennel.  Jennet and her friends rescue five of them, but eight remain unaccounted for. While searching for the missing eight dogs, Jennet must solve the mystery of the ghostly collie, Macduff, whose search for the family that abandoned him has led him to Jennet's door.