OkSPOILERThe ending goes like this: Geralt receves mortal wound, Yennefer destroyes her organism trying to heal him.then the unicorn arrives, and Ciri takes energy from it and cast a spell on them. Then they are lied in a boat and Ciri takes them into the mist.Thay awaken in the place smelling of apples, and Ciri is gone SPOILER ENDSnow - this is strongly inspierd by the arthurian myth - The place they end in is Full of apple tris, as Avalon, th island of Apples, And Ciri is colled the Lady of the Lake many times before.Also Sapkowski Deliberatly avoid using words dead, ding etc. Ciri uses word "odchodzą" in polish witch can mean both "leave" AND "pass away"Also, it IS suggested that Ciri just might be able to heal them, or at least she is convinced of it, butshe cannot acsses the magic energy(reasons given in previous books) before the Unicorn arrives.On the other hand - Zoltan and others ar clearly convinced they are deadConclusion - the ending is open They may be just dead, but they also may be taken to another world alive (Ciri as well as unicorns can travell between worlds)