mass effect 2 DLC Kasumi question.

I just have a question about the Mass Efeect 2 Dlc Kasumi add on. Can i play her mission during the game or do i have to wait until after i beat the game?

She's just like any other recruit anytime before the final battle

What above said. I enjoyed her loyality mission and her moves are sweet.

Is this free if you already have Cerberus Network? Elian2530