I dont follow X-Force.
I skimmed #20 today at the store. Colossus had a little purple girlfriend, she saw his paintings and got upset, so he killed her.
What was in those paintings? Why was she so upset? Why did he kill her?
Piotr is being mind-controlled right now.
Mikhail is back, but Piotr doesn't know. Mikhail is working for the Russian government anti-mutant group XENO, using the Russian mutant, Chronicler, to twist Piotr's mind. Through his art, Piotr has been giving Mikhail Krakoan classified intelligence.