What to Read After Maddie Castle

Maddie Castle’s cases come with another story running alongside them: rebuilding after a shooting has ended her police career and taken her K-9 partner. The Handler brings her back toward investigative work through an injured dog whose handler has been murdered.

Readers can come away wanting different things from that combination. For some, it is the partnership at the heart of the case. For others, it is an investigator carrying personal loss, or a character trying to make a life after violence.

These three choices follow those interests in different directions. None is offered as another K-9 series; each gives you a specific reason to turn the first page.

Mitch Tanner: a police partnership and a missing family

The Depth of Darkness introduces Philadelphia homicide detective Mitch Tanner and his partner, Sam Foster. What initially appears to be an accidental death leads them toward a more disturbing crime involving missing children.

Tanner is already searching for answers at home. His wife and son have disappeared, and he is caring for the daughter who remains with him. The case and his private circumstances make it difficult to keep other families’ fears separate from his own.

Choose Tanner if you want to stay with city-based crime and an established working partnership. The shift from Maddie is toward a homicide detective inside police work, with an unresolved family disappearance running alongside the investigation.

The opening reading route is straightforward: The Depth of Darkness, Into the Darkness, then Deliver Us from Darkness.

Start with The Depth of Darkness by L.T. Ryan.

Follow the Mitch Tanner reading guide.

Rachel Hatch: trained instincts applied to a personal case

In Drift, Rachel Hatch returns to her hometown after her sister’s death. The former Army criminal investigator questions the explanation she has been given and works with Sheriff Dalton Savage to find out what happened.

Hatch is a useful next choice if you respond to Maddie’s combination of professional experience and personal stakes. Both opening novels give their investigators reasons to care that extend beyond the job.

The change is in the kind of story you are entering. Hatch’s series combines investigative work with her military background, combat skills, and a life spent moving on. Drift begins with a return to a place she left, rather than the Pittsburgh private-investigation path Maddie takes.

Begin with Drift and continue to Downburst. The main novels and supplemental stories have separate sections in the series guide.

Start with Drift by L.T. Ryan and Brian Shea.

Follow the Rachel Hatch reading guide.

Gwen Kane: when protecting a new life becomes the story

Gwen Kane offers another collaboration between L.T. Ryan and C.R. Gray, with a move into psychological suspense.

In Victim or Villain, Gwen has escaped an abusive marriage and found refuge at Rhiannon’s Ranch. She works at a nearby bakery and is beginning to trust the safety she has found. Violence reaching that community forces difficult choices about protecting it.

Choose Gwen if Maddie’s effort to rebuild is the part you most want to explore from another perspective. The focus moves from a professional investigator and canine partnership to a survivor whose private sanctuary is threatened.

The premise includes domestic abuse and violence. Victim or Villain is the first main novel; Breaking Point is a separate prequel novella.

Start with Victim or Villain by L.T. Ryan and C.R. Gray.

Follow the Gwen Kane reading guide.

For another case-driven working partnership, begin with Tanner. For a trained investigator drawn into a deeply personal search, try Hatch. For the psychological stakes of protecting a hard-won new life, choose Gwen.

The Maddie Castle reading guide is the place to check your current book, the prequel, and the collections.

Header art: AI-generated interpretation of Tempest, inspired by the opening chapters of The Handler.