Cast Credits Steeltown Murders (2023) Guest starring as Young Dai Williams (3 episodes) Episode 1x04: Episode 4 (May 15, 2023) Episode 1x02: Episode 2 (May 15, 2023) Episode 1x01: Episode 1 (May 15, 2023) Sherlock (2010) Guest starring as Technician Episode 4x03: The Final Problem (Jan 15, 2017)
