The Calendar Killer Libro

Head of Zeus -- an Aries Book

Walk Me Home: now adapted into the hit Amazon Prime movie THE CALENDAR KILLER

Lulu.com

Serial Killer Calendar: This Day in Killer History

LAK Publishing

The Ultimate Serial Killer Trivia Book: A Collection Of Fascinating Facts And Disturbing Details About Infamous Serial Killers And Their Horrific Crimes (Perfect True Crime Gift)

Workman Calendars

Year of True Crime Page-A-Day® Calendar 2025: Brazen Heists, Remorseless Killers, Incredible Bravery!

Independently published

Calendar Killer: The Comic Spy ( Book 3 )        

The Calendar Killer (English Edition)            

Browntrout Pub

Orcas, Killer Whales 2014 Calendar: 18-month    

The Asian author

Calendar Killer: The comic spy series (English Edition)

Usborne

Advent Calendar Book Collection                  

Independently published

UK Serial Killer Colouring Calendar 2022: Most Dreaded Infamous Serial Killers in British History