[Tinman]

I am about to start GMing a new 3rd Imperium campaign and my players like to have an espionage focus in their games.

My question is where can I find detailed info on the Imp. Intell. and the I.G.

I have all the 3e Traveller books & there's a bunch there on the I.G. but not on the I.I.S. (?) (Heck they are so secret that I dont even know the official name of the organisation.)

Thanks in advance for all the help.