There are 2 books in the Grinning Assassin series.
The Grinning Assassin series does not have a new book coming out soon. The latest book, The Woman of Steel and Scars (Book 2), was published in December 2025.
The first book in the Grinning Assassin series, The Assassin of Grins and Secrets, was published in October 2021.
The Grinning Assassin series primarily falls into the Dark Fantasy genre.