Jumping Jack Flash is by haces222 and is 9 chapters plus an epilogue.
Not much I can tell you about this one except...
Summary: What if Jack came back from the Doctor changed?
The parts are not linked unless you start from the end, so....
Part 1 Part 2 Part 3 Part 4 Part 5 Part 6 Part 7 Part 8 Part 9 & Epilogue
And there you have it!
Happy reading, everybody!