sentences:  The Battle of Bannerman Road (Series 5 finale) had a bunch of ideas and developments that were planned out but the episode itself never reached script form which means there are several possible outcomes of where the series could have gone but it would all depend on how Series 5 draws its conclusion.Written by Russell T. Davies.It would have seen the return of the Seventh Doctor's companion Ace and explained how Ace left the Doctor and what had happened to her since then.