How to Read the Cruise Ship Cozy Mystery Series
For the best reading experience, it is highly recommended to read the books in publication order. While each mystery is a standalone story, Millie's personal journey, career transitions, and relationship developments build chronologically from one book to the next.
1. Millie's Cruise Ship Cozy Mysteries (The Original Series)
This is the foundational series introducing Millie Sanders as a senior sleuth who becomes the assistant cruise director aboard the Siren of the Seas. The series consists of 24 main novels:
- Starboard Secrets (2015)
- Portside Peril (2015)
- Lethal Lobster (2015)
- Deadly Deception (2015)
- Vanishing Vacationers (2016)
- Cruise Control (2016)
- Killer Karaoke (2016)
- Suite Revenge (2016)
- Cruisin' for a Bruisin' (2017)
- High Seas Heist (2017)
- Family, Friends, and Foes (2017)
- Murder on Main (2017)
- Fatal Flirtation (2018)
- Deadly Delivery (2018)
- Reindeer & Robberies (2018)
- Transatlantic Tragedy (2019)
- Southampton Stalker (2019)
- Peculiar Poison (2020)
- Mischief and Mutiny (2020)
- Dog-Gone Cruise Director (2020)
- Southampton Strangler (2021)
- Rendezvous and Revenge (2021)
- Cruising Cowboys (2022)
- Cruising Cold Turkey (2023)
2. Cruise Director Millie Mysteries (The Spin-off Series)
After the events of the original series, Millie receives a promotion to official Cruise Director and begins a new chapter in her career. This continuation spin-off series should be read after completing the original 24 books:
- Christmas Cruise Crisis (2023)
- Bamboozled in Bimini (2024)
- Ketchikan Killer (2024)
- Millie's Cruise Ship Mysteries (2024)
Chronological Caveats & Reading Tips
Because Millie's personal life undergoes major changes—including her job promotions and relationships with the ship's crew and passengers—reading the books out of order will reveal significant spoilers. The cozy mystery elements are wrapped up in each volume, but the overarching story of Millie rebuilding her life after divorce is best enjoyed chronologically.
Spin-offs, Co-Authored Books, and Crossovers
Hope Callaghan writes her books independently, so there are no co-authored titles in this series. While the Cruise Director Millie Mysteries is the direct spin-off of the main cruise series, Callaghan's other books (such as the Garden Girls series) share a similarly wholesome, clean, and faith-inspired tone but are set in different universes.