"Torchwood" is a British science fiction television series created by Russell T Davies. It is a spin-off of the popular show "Doctor Who" and follows a team of alien hunters based in Cardiff, Wales. The team investigates extraterrestrial incidents and protects Earth from various threats, often dealing with moral dilemmas and complex relationships. The series features the character "Captain Jack Harkness," a time-traveling former Time Agent, who leads the team. "Torchwood" explores themes of loss, love, and the consequences of technology, blending action, drama, and occasional humor throughout its four seasons and a series of audio dramas.