Complex sentence: In the television show "Doctor Who" and the spin-off show "Torchwood", the character Jack Harkness faces the same fate as Tithonus in that when brought back from the dead, he discovers he is both now immortal and still aging.
Split into simpler sentences: In the television show "Doctor Who" and the spin-off show "Torchwood", the character Jack Harkness faces the same fate. When brought back from the dead, he discovers he is both now immortal and still aging.