From the Publisher:
The twelfth and final book in the popular and long-running series finds Dr. Nightingale investigating the murder of her free-spirited friend, Rose -- and digging deep into Rose's apparent double-life. If anyone can sniff out the killer, it's Deirdre Nightingale.
Lydia Adamson: Dr. Nightingale Follows a Canine Clue. Signet, ISBN: 0451203666 (July, 2001), 200 p., $5.99