The Tunnel Main cast, played by Christine Bottomley Episode 3x01: Episode 1 (Dec 14, 2017) Episode 3x02: Episode 2 (Dec 14, 2017) Episode 3x04: Episode 4 (Dec 14, 2017) Episode 3x05: Episode 5 (Dec 14, 2017) Episode 3x06: Episode 6 (Dec 14, 2017)
