In Prisoners of Time, a series to celebrate the 50th anniversary, Grace travels with the Doctor for a while but is kidnapped by a mysterious time traveler who is kidnapping the Doctor's companions.
Grace travels with the Doctor for a while. This is in Prisoners of Time. Grace is kidnapped by a mysterious time traveler. This was in Prisoners of Time. This mysterious time traveler is kidnapping the Doctor's companions. Time is a series to celebrate the 50th anniversary.