Sebastian worked at Torchwood 1 in 2007. At one point he handed Yvonne Hartman a particle gun, which she showed to the Tenth Doctor. (TV: Army of Ghosts)
Sebastian worked at Torchwood 1 in 2007. At one point he handed Yvonne Hartman a particle gun, which she showed to the Tenth Doctor. (TV: Army of Ghosts)