The first book of this series is a short story published on the author's website named 'Blood and Fear'.
'Conall O'Lorcan has a rage within him, a rage he doesn't know how to control. Cast out of his village when he becomes a danger, he must seek a new life where nobody knows his secrets. When he is recruited into a guild of thieves, his secrets become hard to hide.' (Publication summary)
'Conall O’Lorcan is a thief plagued by the secrets of his past – secrets people would fear; secrets he himself fears. When he accepts a commission from the mysterious Baron, his life spirals into turmoil and he is forced to face his fears head on as he tries to set things right.' (Publication summary)