The embassy quest where Abram asks you for information and (supposedly?) gives you a spawn to plant into the vent system is bugged I think. Because when I reported to Garren about the infiltration he asked me about the spawn, which I didn't even have in my inventory, and the only options I could use was to tell him "i did it" or "it's stashed", but not that I refused Abrams offer. It seemed kind of odd to me because I didn't recall taking the burrower spawn from him.
