Emma Howe & Billie August Books in Order

The Emma Howe and Billie August books move Gillian Roberts from Philadelphia school halls to Marin County, California, but they keep her interest in mismatched people, social pressure, and the trouble hidden inside comfortable lives. Emma Howe is a seasoned private investigator, middle-aged, capable, and not especially warm. Billie August is younger, broke, inexperienced, and raising a small son on her own. On paper they look like a bad fit. In practice, that friction is what gives the series its spark.

Emma hires Billie because she needs help and cannot afford much better. Billie takes the job because she needs work and cannot afford to be choosy. That setup keeps the books grounded from the start. These are not glamorous detective stories about brilliant operators gliding through perfect deductions. They are stories about rent, childcare, dead-end leads, difficult clients, and two women trying to do serious work while managing very different lives and tempers.

They do not become instant friends.

Emma is blunt, impatient, and used to doing things her own way. Billie is greener, gentler, and better at reaching people Emma tends to bulldoze past. That difference matters in the cases. Emma can push, provoke, and keep moving when a situation gets ugly. Billie can calm frightened witnesses, talk to vulnerable people, and notice emotional details others skip. Roberts builds the partnership out of that contrast, so each woman's weakness becomes the other one's opening.

The setting does a lot of work too. Marin County comes with beaches, redwood groves, houseboats, wealth, and beautiful views, but Roberts is interested in the darker side of that beauty. In Time and Trouble, a runaway girl, a lucky talisman, insurance fraud, and buried remains expose the uglier side of a place built on privilege. In Whatever Doesn't Kill You, the cases turn on a young man accused of murder and a woman searching for her birth mother, and once again the polished California surface gives way to secrecy, neglect, and old damage.

What links the books is not just plot, but temperament. Roberts writes these mysteries with more private-eye texture than the Amanda Pepper series, yet the focus stays personal. The crimes matter because the people do. Billie wants to prove she belongs in the work. Emma has to learn that competence is not the same thing as control. Watching them adjust to each other is half the fun.

The beauty is real, and so is the damage.

If Amanda Pepper gives you a witty Philadelphia amateur sleuth, Emma Howe and Billie August offer a more uneasy detective pairing, set against Northern California money and illusion. Expect clashing personalities, solid emotional stakes, and cases that remind you how much can go wrong behind an attractive front door.