Dept. Q Guest cast, played by Catriona Stirling Episode 1x01: Episode 1 (May 29, 2025) Episode 1x02: Episode 2 (May 29, 2025) Episode 1x04: Episode 4 (May 29, 2025) Episode 1x05: Episode 5 (May 29, 2025) Episode 1x06: Episode 6 (May 29, 2025) Episode 1x08: Episode 8 (May 29, 2025) Episode 1x09: Episode 9 (May 29, 2025)
