Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | A Friend in the Dark | 2020 | C.S. Poe | Buy |
| 2 | A Friend in the Fire | 2021 | C.S. Poe | Buy |
| 3 | A Friend in the Glass | 2024 | C.S. Poe | Buy |
| 4 | A Friend in the Wind | 2025 | C.S. Poe | N/A |
The Auden & O’Callaghan series pairs a forensic psychologist with a detective, giving the mysteries a psychological dimension that differs from Poe’s more historical Snow & Winter books. A Friend in the Dark (2020) opens the series, establishing the partnership and the central relationship, with three more books following through 2024.
Poe uses the forensic psychology angle to explore the criminal mind more directly than in her other series, while keeping the gay romance as an ongoing thread across all four books. The series is ongoing — A Friend in the Wind does not yet have a confirmed publication year as of 2025.