
2 Sisters Detective Agency
thriller
Series · thriller
The Detective Harriet Blue series by James Patterson has 4 books and is best read in publication order, starting with Black & Blue (2016).
Start here: Black & Blue (2016) — then read straight through in publication order.

The order the books were released — the default way to read the series.
Sydney detective Harriet "Harry" Blue is impulsive, combative and constantly at war with her own department -- so when her own brother becomes a murder suspect in the series opener, she's exiled to the brutal outback town of Last Chance Bay rather than allowed near the case. James Patterson paired with Australian crime writer Candice Fox to give the series real regional texture: outback isolation, Sydney's criminal underworld, and a lead whose loyalty to her family keeps colliding with her instincts as a cop.
The series is short but complete -- a prequel novella (Black & Blue) followed by four novels running from Never Never (2016) to Hush Hush (2019) -- with Harry's fraught relationship with her brother Sam running through the whole arc. Fox's on-the-ground knowledge of Australian crime fiction and setting complements Patterson's usual short-chapter pacing, giving the series a sharper regional identity than most of his other collaborations.
Read in publication order starting with the short prequel Black & Blue (2016) if you want the character's introduction, then Never Never (2016), which sets up Harry's exile and her brother's case -- the central arc that carries through all four novels. The series is a complete, closed story rather than an open-ended franchise, so there's real payoff in reading it start to finish rather than dipping in partway through.
Black & Blue is an optional short lead-in rather than essential reading; you can start directly with Never Never and pick up everything you need about Harry's situation there.
Four novels -- Never Never (2016), Fifty Fifty (2017), Liar Liar (2018) and Hush Hush (2019) -- plus a short prequel, Black & Blue (2016).
Publication order, starting with Never Never (or the short prequel Black & Blue first, if you want it). The series is a complete four-book arc rather than an ongoing franchise.
Yes -- no further novels have been published since Hush Hush (2019), and the series reads as a complete arc.
Sydney and the fictional outback town of Last Chance Bay, Australia -- co-author Candice Fox is an Australian crime novelist who grounds the series in real regional detail.
James Patterson and Candice Fox co-wrote all five entries, including the prequel novella.
Reading order last verified .