Kevin Grey
Senior HTF Member
- Joined
- May 20, 2003
- Messages
- 2,598
I think the envelope contained Costigan's summary of what happened, linked Sullivan as the mole, and instructions to pass the info to Dingam. Since this was before he had the tapes, Costigan didn't have any real proof but he knew that if Dingam knew what had happened and who the mole was that he would be able to take care of it (though I doubt he thought that Dingam would kill Sullivan outright).
And, maybe I'm wrong, but I was under the impression that Costigan gave Maddy the envelope outside of her office, not her home. Costigan had no idea that Maddy was ever involved with Sullivan and had no way of knowing that she would actually intercept the envelope that he sent him.