The Vortex Butterfly's identity has finally been unveiled... but the Doctor is distraught to discover that this entity is none other than his beloved companion, Gabby! Vortex Butterfly Gabby insists that he left her behind, in every possible timeline, and she was forced to build her own world from pieces of space and time. Meanwhile, present Gabby (staying in London with Cindy and Sarah Jane Smith) is experiencing strange things too - her powers have brought her drawings to life!