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    Layton Green 
      Daniel Layton Greening 
[1973-] | 
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    Dominic Grey, a diplomatic security agent and private investigator, and Professor Viktor Radek, an expert on cult: | 
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    The Summoner (2011) 
      The Egyptian (2013) 
      The Diabolist (2013)  | 
    The Shadow Cartel (2015) 
      The Reaper’s Game (2016) 
      The Resurrector (2017) 
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    Joe “Preach” Everson, a prison chaplain turned police officer, leaving Atlanta after a mental breakdown to return home to Creekville, North Carolina: | 
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    Written in Blood (2017)  | 
    Filmed in Blood (2019)  | 
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    Andromeda "Andie" Robertson, an astrophysics PhD candidate, and Cal Miller, an investigative reporter, following clues around the world in search of a mysterious device invented by Andie’s mentor, the famous physicist Dr. James Corwin: | 
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    Unknown 9: Genesis (2020) 
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    Unknown 9: Revelation (2021)  | 
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    Non-series: | 
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    The Metaxy Project (2014)  | 
    The Letterbox (2016)  | 
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    Other fiction 
The Blackwood brothers fantasy quest saga: | 
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    The Brothers Three (2017) 
      The Spirit Mage (2017)  | 
    The Last Cleric (2018)  | 
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