You're sent to deliver a package containing a chemical virus that needs to be researched to an NPC outside of town. I was attacked by one Hutt thug this time, same as each of the thugs in quest 3, though there was another hostile guy standing nearby that didn't charge me (I may have just gotten lucky). Hand in the package then return for your reward. Talon didn't give any further leads and wouldn't talk to me at all after this.