I compiled everything I could find on the Pucker for FastJack and thought I'd share what I could about his disappearance.
Here is what I've got so far...
The last time we hear from Puck* was during Unwired. There he says he was tracking a group of AIs called Code Clan. Code Clan was connected with a technomancer cult called the Discordians, some of whom are former members of Ex Pacis. After that, Netcat says that Puck was offline for 5 days.
Next, we see the scene in Corporate Guide where he's being tortured and experimented on. This is relevant because the first time we saw Puck in Shutdown, this is what he was doing to others.
Then, in Feral Cities, Netcat drags Pistons to GeMiTo to meets with a gang called the Capotreni, who were the last people Puck went to see before he disappeared. The Capotreni seem somehow connected to technomancers. The German wiki claims they are a technomancer gang, but I can not confirm this.
Lastly, in Vice, Netcat and Pistons are in Afghanistan trying to barter passage to Kolkata in Bengal, India. This is of note because Kolkata(or Kolkota) Integrated Talent & Technologies was one of the hubs Winternight and Ex Pacis used to launch the Jormungand virus.
Earlier in Vice, it also notes that Friday, the only surviving Norn of Winternight, has recently escaped. Clockwork then spells it out that a psychopathic killer who used to run with Pax is on the loose and that Puck has gone missing while investigating Ex Pacis.
*Puck also has a comment at the beginning of Vice about high-tech arson. Considering there are not one, but two references to his disappearance later in the book, this would imply that all the info in Vice was compiled at different times.
Dr. Catherine Sharon doesn't appear in any other material I can find. She does have a first name for a last name, which is not to be trusted unless that last name is Wayne(John and Bruce.)
