First Wave S02E09 - Lost Souls

Working in a subway tunnel, a jackhammer operator discovers the body of a travel writer encased in a concrete wall, She is alive and hasn't aged, even though the wall was constructed fifty years before.

Quatrain 19 Century 4: "A maiden cut aloft from humanity / Locked in a coffin of stone / Her resurrection a clue for the man twice blessed / Till the fate of her soul has been sealed".