The Locked Tomb Series
(6 books)

Books in the series:
1.  
The Mysterious Study of Doctor Sex (2020)
* (Prequel)

2.  
Gideon the Ninth (2019)

3.  
Harrow the Ninth (2020)

4.  
As Yet Unsent (2021)
* (Short Story)

5.  
Nona the Ninth (2022)

6.  
Alecto the Ninth (2023)