The Alec Lonsdale series by Susanna Gregory consists of 2 books, published between 2018 and 2019. The series begins with Mind of a Killer.
The Matthew Bartholomew series by Susanna Gregory consists of 25 books, published between 1996 and 2021. The series begins with A Plague on Both Your Houses.
The Medieval Murderers series by Susanna Gregory consists of 10 books, published between 2005 and 2014. The series begins with The Tainted Relic.
The Sir Geoffrey Mappestone series by Susanna Gregory consists of 8 books, published between 1998 and 2011. The series begins with Murder in the Holy City.
The Thomas Chaloner series by Susanna Gregory consists of 15 books, published between 2006 and 2022. The series begins with A Conspiracy of Violence.