Steve Berry (Diana Gabaldon) Books in Order

The Steve Berry (Diana Gabaldon) grouping looks at the crossover from the thriller side of the aisle. If you know Jamie and Claire well but have never met Cotton Malone, this is the place that explains how Berry’s modern hero brushes up against Gabaldon’s 18th‑century world without breaking either series.

In the Cotton Malone novels, Berry usually starts with something concrete: a missing treaty, a contested tomb, a coded letter that still matters to governments centuries later. Past Prologue, co‑written with Gabaldon, keeps that pattern. Cotton arrives at an old Scottish castle for a rare‑book event, on the trail of a valuable volume with marginal notes that certain people would rather never see the light of day. The setup feels like a classic Malone case, complete with a confined setting, a small cast of suspects, and the implication that history is being quietly edited by powerful hands.

What is different is what happens when Cotton follows that trail out into the mist and through a ring of stones. From Berry’s side, the story becomes a thought experiment: what if a very grounded field agent, trained to mistrust anything he cannot verify, walks into a situation that can only be explained by time travel? How much of his standard toolkit still works when the politics are Jacobite rather than European Union, and when you cannot call for backup?

On the page, that means readers see Jamie Fraser, Ardsmuir, and Highland Scotland through Cotton’s eyes rather than Claire’s. He notices different details: the way a prison is laid out, the discipline of the men who hold it, the gaps in their security, the kinds of secrets that might plausibly be hidden in a ledger or a journal. Berry’s pacing and clipped, contemporary style sit alongside Gabaldon’s rich historical texture, and the result is a story that moves quickly but still feels anchored in a specific time and place.

For Steve Berry readers who are curious about Gabaldon, the crossover offers a bridge: familiar investigative logic, unfamiliar rules of physics. For Gabaldon readers who want to sample Berry, it shows how Cotton operates when he is out of his depth and still trying to do the right thing with partial information. The story stands alone, but it also points outward, inviting you either into the long run of Cotton Malone thrillers or deeper into the Outlander novels, depending on which side you started from.

This mini‑series background focuses on that shared story, its place in both authors’ timelines, and practical questions like where to slot Past Prologue if you are reading or rereading the larger series. Think of it as a small doorway between two very different but compatible fictional universes.