What Have I Done? (audio story)

 was the second audio story in the anthology The Lives of Captain Jack: Volume Two. It was written by Guy Adams and starred John Barrowman as Captain Jack Harkness.

Publisher's summary
On the battlefields of World War I, something is hunting in the trenches. Jack must try and save the life of a wounded soldier.

Plot
to be added

Cast

 * Captain Jack Harkness - John Barrowman
 * Ata - Atilla Akinci
 * Ottoman medic - Ché Francis
 * Allied soldiers - Rhys Isaac-Jones / Jonny Glynn

Continuity

 * Earlier in the war, Jack was recovering from a shot to the head at a hospital during the Christmas truce. (COMIC: The Forgotten)
 * Every time Jack dies, he sees a glimpse of the blackness. (TV: Everything Changes etc.)
 * Jack will acknowledge his deaths during World War I when he meets the Tenth Doctor. (TV: Utopia)
 * The Fourth Doctor was present at Gallipoli. (PROSE: Direct Action)