Owen owned Greenacre, a tract of land, in fee simple. By warranty deed he conveyed Greenacre to Lafe for life "and from and after the death of Lafe to Rem, her heirs and assigns." Subsequently Rem died, devising all of her estate to Dan. Rem was survived by Hannah, her sole heir at law. Shortly thereafter Lafe died, survived by Owen, Dan, and Hannah. Title to Greenacre now is in
Owen, because the contingent remainder never vested and Owen's reversion was entitled to possession immediately upon Lafe's death.  Dan, because the vested remainder in Rem was transmitted by her will.  Hannah, because she is Rem's heir.  either Owen or Hannah, depending upon whether the destructibility of contingent remainders is recognized in the applicable jurisdiction. 