The Alix London series by Aaron Elkins consists of 4 books, published between 2012 and 2016. The series begins with A Dangerous Talent.
The Gideon Oliver series by Aaron Elkins consists of 18 books, published between 1982 and 2016. The series begins with Fellowship of Fear.
The Lee Ofsted series by Aaron Elkins consists of 5 books, published between 1989 and 2005. The series begins with A Wicked Slice.
The The Chris Norgren Mysteries series by Aaron Elkins consists of 3 books, published between 1987 and 1993. The series begins with A Deceptive Clarity.