This chapter examines cases of later medieval reanimation in order to consider boundaries of human life, the circumstances in which they are made visible, and means by which they could be crossed. After briefly addressing basic eschatological ideas that framed medieval understandings of life, death, and resurrection, the chapter quickly situates reanimation among some of the other ways in which life-death could be bridged—namely dream-visions and revenants, with mention of saints. It then discusses reanimation itself, presenting the different purposes it could serve and the various ways by which it might occur, which in turn reveals different degrees of community involvement and agency in bringing a person back to life. Finally, it points to some of the specific questions around determining the presence of life that could be forced by a small subset of reanimation cases—those of unbaptized infants.