Luc Callanach and Ava Turner

Luc Callanach and Ava Turner are the detective duo at the center of Helen Fields's DI Callanach series — Luc Callanach, a French-Scottish Interpol officer whose career was derailed by a false accusation and who rebuilds his professional life in Edinburgh, and DI Ava Turner, his colleague and eventual partner whose complementary skills and personal history give the series its central relationship. Fields writes Edinburgh crime fiction with strong atmospheric specificity and genuine character investment.

The Edinburgh setting provides one of crime fiction's most atmospheric urban environments — Fields uses the city's physical beauty, its layered history, and its specific social geography with genuine knowledge and affection. Callanach's continental European perspective gives him an outsider's view of Scottish institutional culture that generates productive friction throughout the series.

Fields has built a large readership within British crime fiction, and the Callanach and Turner series demonstrates her ability to sustain character development across multiple novels while delivering consistently satisfying mystery plots. Begin with Perfect Remains and read in order.