SIGIL is a cyberpunk, science-fiction mystery thriller and is the debut novel of author Brannigan Carter.


¿The year is 2035, and Leyla can't remember anything that happened three years ago, just that she woke up cold and covered in dirt in the abandoned subway tunnels of Cincinnati. She eventually found her way to a homeless camp where she became very good friends with a woman named Del.


One day, Del is inexplicably pulled through a portal by someone in futuristic black armor, and when the portal closes, Del is gone.


Leyla immediately embarks on a search for her missing friend, which leads her back to the abandoned subway tunnels, where she uncovers an immense hidden metropolis with technology that has far surpassed that of the modern age.


Will Leyla save her best friend? Or will the secrets she uncovers in this SubCity spell doom for not just her, but the entire world?