Madame Mayor
Banned
And I bought a ME novel =D unfortunately it takes place after ME2, so I can't read it yet.
YOU CAN'T READ THEM OUT OF ORDER! Seriously, the three books go together, you won't understand what's going on if you don't read them in order. It goes: Revelation, Ascension then Retribution. The first two I think are before ME2, the very first one being before ME1.