So, I was thinking about Gridlock last night, and this little thing popped into my head. Should I continue it?
"He was a friend. An old friend." The Doctor murmured, looking at the dead body- or rather, head- for a few more moments before standing up with Martha. "We should g-"
He was cut off by a loud gasping noise. Whirling back around, his eyes widened with shock as he took in the man that had replaced the Face of Boe. The very familiar, very bodiless man.
"Jack!" He exclaimed, gaping. "What- how- you're a head!"
"Yeah. Got decapitated a while back- Headless Monks, you know, always causing trouble- and you have no fucking idea how hard it was to not die for 3 million years."
"3 million? Really? So you are, then, the, ah...?"
"Yes, I'm the Face. I had to age enough that there was no way you'd recognize me, otherwise the timelines would be all screwed up. And I revert back when I die, so I had to stay out of trouble for 3 fucking million-"
The Doctor cut him off by laughing, a laugh bordering on hysterical. Beside him, Martha was glancing between the two in obvious confusion. "So, ah, you two know eachother?"
"Yeah. And I'd really like the rest of my body back, if you don't mind." Jack chuckled, but it quickly turned into a grimace. "Captain Jack Harkness. And you are?"
"Martha. Martha Jones." She quickly turned to look at the Doctor. "But, Doctor, how is this even possible? He's just a head!"
The Doctor frowned for several seconds before looking back at her. "Martha," he asked slowly, "If I were to give you a decapitated head and the body it came from, would you be able to put them back together?"
"Yes, I suppose- but the patient would still be dead! There's no way, it's not possible! It's not- not if he's human..." she trailed off.
"Well Jack," the Doctor spoke, gently picking up the head of his old friend, "I think it's time we paid the Headless Monks a little visit."