LockedawayintheJewishghettoofanoccupiedUkrainiantownin1941,amotherrevisitsherlifeinalastlettertoherson.In1941,aRussianJewishwomandoctorlivesinasmallcityintheUkrainejustseizedbytheGermans.Shewritesalastlettertoherson,afamousRussianphysicistwholivesandworksfarfromthefrontlinesataSovietsciencere...