"We both agreed that we'd rather be dead--truly dead--than walk the world as Strigoi" p. 12
Dimitri was turned Strigoi after getting attacked in the last book, so Rose is setting out to kill him. She decides to look for him in Siberia since that is where he is from.
While in bed, she felt the presence of Strigoi outside. She went out, only to find there there were two. She didn't think she had a chance because they attacked her, but a bunch of ghosts appeared and saved the day. She then passed out and ended up in Baia which was Dimitri's hometown. She asked the woman who was attending to her who she was and she said "Olena Belikova" who just happens to be Dimitri's mother!
Rose spent time with Dimitri's family, but was ordered to leave the town, so then went off to do what she set out to do--kill Dimitri. She had to find him first though.
I won't tell anything else because I don't want to ruin it for anyone. If you haven't read this series, you should. There is a cliffhanger at the end, and I can't wait to read the next book which comes out in May!