This is the final book in a series of nine novels based on the television series "Get Smart". This book tells the story of how Maxwell Smart, and his partner {and now his wife} Agent 99, try to follow KAOS agents to a secret assains' seminar. However the passangers on the train dissapear. They are confronted by a KAOS agent named Arbuthnot, and then brought to a ghost town. Where they meet a real ghost, and his ghost donkey. This ninth book was released in September 1969, the same month that the shows fifth {and final} season began.

Get Smart, books by William Johnston, each book was originally priced at 60¢;
1. Get Smart! #T-103
2. Sorry, Chief... #T-119
3. Get Smart Once Again #T-121
4. Max Smart and the Perilous Pellets #T-140
5. Missed it by That Much! #T-154
6. And Loving It! #T-159
7. Max Smart - The Spy Who Went Out to the Cold #T-174
8. Max Smart Loses CONTROL #T-191
9. Max Smart and The Ghastly Ghost Affair #T-5326