Brian O'Sullivan

Fionn: Defence of Rath Bladhma (The Fionn mac Cumhaill Series #1)

2014

Fionn: Traitor of Dún Baoiscne (The Fionn mac Cumhaill Series #2)

2015

Fionn: Stranger at Mullán Bán (the Fionn mac Cumhaill Series #4)

2022

Fionn: The Adversary

2017

Fionn: The Betrayal

2025

Fionn: The Tightening Trail (the Fionn mac Cumhaill Series #5)

2024

The Photo Album (Unabridged)

2025

Sh*t Show (Unabridged)

2026

Clusterf*ck (Unabridged)

2026

#1 Fan and Other Thrilling Short Stories (Unabridged)

2026

The Video Tape: Bobby McGowan Thrillers, Book 3 (Unabridged)

2025

Debut Novel (Unabridged)

2025