Doctor Who: The Tenth Doctor Year Three — Titan Comics
Issue: #13
The penultimate episode of the stunning Year Three sees the Doctor forced to justify his meddling in time - with Gabby and Cindy's lives on the line!
First appearances: Sil
Creators: Nick Abadzis, Rachel Smith, Iolanda Zanfardino, Giorgia Sposito
Characters: The Doctor, Cindy Wu, Sil, Gabriella Gonzalez
Story arcs: The Good Companion