Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | Polar Bear Dawn | 2013 | Lyle Nicholson | Buy |
| 2 | Pipeline Killers | 2014 | Lyle Nicholson | Buy |
| 3 | Treading Darkness | 2017 | Lyle Nicholson | Buy |
| 4 | Black Wolf Rising | 2017 | Lyle Nicholson | Buy |
| 5 | Climate Killers | 2018 | Lyle Nicholson | Buy |
| 6 | Caught In The Crossfire | 2019 | Lyle Nicholson | Buy |
| 7 | Deadly Ancestors | 2020 | Lyle Nicholson | Buy |
| 8 | When the Devil Bird Cries | 2020 | Lyle Nicholson | Buy |
| 9 | The Last Exit | 2023 | Lyle Nicholson | Buy |
| 10 | Suspects and Liars | 2024 | Lyle Nicholson | Buy |
The Detective Bernadette Callahan Mystery series by Lyle Nicholson follows an RCMP detective working cases across northern Canada. Starting with Polar Bear Dawn (2013), the series grew to ten books by 2024. Callahan investigates murders connected to pipelines, wildlife trafficking, and other threats to the northern landscape.
Pipeline Killers (2014), Black Wolf Rising (2017), and Climate Killers (2018) reflect the environmental and political pressures facing Canada’s North. The most recent entries, The Last Exit (2023) and Suspects and Liars (2024), continue to place Callahan in the middle of dangerous situations.