[written in Ianto's paper diary]

[likesthecoat]

Now that I've had a little time to process it all, a reconstruction:

• Q swaps bodies among several members of TIC, including Jack and Lorne.
• A ZPM, the main power source of Ancient technology, falls through the Rift into Cardiff.
• Ba'al, a Go'auld (Ancient pseudo-god*), follows it through.
• Ba'al tracks the ZPM to the Hub.
• Ba'al leaves his current host body and attaches himself to Jack (who is, let's remember in Lorne's body at the time.)
• In the process, Jack gets killed. Being Jack, he doesn't stay dead.
• All the more reason for Ba'al to stay with Jack. Only . . .
• Q swaps everybody back. So:
• Ba'al is now in Lorne's body, with his ordinary mortality. Ba'al wants Jack's immortality back.
• Ba'al leaves Lorne's body, trying to get back into Jack's
• At which point we shoot it.

I think I got all of it.

*Babylonian? Seem to remember him in the Bible. Elisha or Elijah. Blood sacrifice?