Doctor Who: Ninth Doctor #14

With some knowledge of his past life apparently restored, Jack is determined​ ​to put right his misdeeds as a Time Agent – in particular, stopping his past​ ​self from erasing the criminal Zloy Volk from the timeline, using an Eradicator​ ​gun. But... Zloy Volk is very much alive. How?! Even worse, in the process of​ ​stopping his past self from erasing Volk all over again, JACK was seemingly​ ​erased! The Doctor, Rose, and Tara are on the scene...