Callahan & McLane Books in Order

Callahan & McLane grew out of reader demand. Detective Mason Callahan started as a supporting character in the Bone Secrets books, the kind of steady, slightly rough-around-the-edges cop who quietly stole scenes. Pairing him with FBI Special Agent Ava McLane, Kendra Elliot built a four-book series that follows both their investigations and the slow burn of their relationship.

Each novel tackles a different kind of high-pressure case. Vanished opens with the abduction of an eleven-year-old girl from a seemingly ordinary family, a case made more painful because Mason is related to the victim and has just lost a confidential informant to murder. In Bridged, a congressman is found tortured and hanging from a bridge, the first of several killings that suggest a serial predator at work in Portland. Spiraled throws Ava into the middle of a mall shooting and a wave of copycat attacks, while Targeted pits the couple against a killer who is hunting police officers—and seems intent on making things personal.

Ava and Mason come from very different backgrounds. She’s a federal agent with a strong sense of duty and a complicated home life, including a twin sister whose mental-health and addiction struggles constantly threaten to spill into Ava’s cases. He’s an Oregon State Police detective with a dry sense of humor, a messy blended family, and an old-school approach to the job. Much of the series’ heart lies in watching them learn to trust each other, both on and off duty, without ignoring the weight they each carry.

The tone balances gritty crime scenes with moments of warmth, banter, and the awkwardness of building a life together around unpredictable work.

For readers who enjoy continuity, Callahan & McLane is also a bridge to the wider Columbia River universe. Ava and Mason reappear there, especially in The Silence, which functions as an unofficial fifth book for their story. Secondary characters from Bone Secrets migrate through these novels too, giving the sense of one large Pacific Northwest task force facing an endless stream of dangerous people.

Start here if you like procedural detail, serial-killer puzzles, and a central couple whose romance feels as hard-won as their cases. The books are best read in order to follow the growth of Ava and Mason’s partnership and to appreciate how each investigation leaves its mark on them.