Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | Until Depths Do Us Part | 2024 | K.B. Jackson | Buy |
| 2 | A Matter of Life and Depths | 2024 | K.B. Jackson | Buy |
| 3 | Frightened to Depths | 2025 | K.B. Jackson | Buy |
The Cruising Sisters Mystery series combines two popular cozy mystery elements: a recurring detective duo and an exotic setting. The sisters travel on cruises and inevitably stumble into criminal situations aboard ship. Until Depths Do Us Part (2024) and A Matter of Life and Depths (2024) launched the series with “depths” puns in every title.
Frightened to Depths (2025) continues the pattern. The cruise ship setting naturally creates a closed-circle mystery environment, since the suspects are trapped on a ship at sea. K.B. Jackson uses the travel backdrop to vary each book’s location while keeping the sisterly dynamic at the center.