| Hint | Companion |
| She lives on a parallel universe | |
| He opened the genesis ark | |
| He fired a paintball gun at a dalek | |
| There was a crack on her bedroom wall | |
| The boy who waited | |
| She became a Human Time Lord | |
| She now works for U.N.I.T | |
| He can live forever | |
| The Doctor doesn't know who she is yet | |
| Her daughter is Rose Tyler | |