Through tireless research and perseverance, Mark takes us on a journey of discovery gathering and pursuing new evidence, earning the trust of silent witnesses and sharing the personal toll this extraordinary job takes on him.Mark's story is a relentless and inspiring one;

Through tireless research and perseverance, Mark takes us on a journey of discovery gathering and pursuing new evidence, earning the trust of silent witnesses and sharing the personal toll this extraordinary job takes on him.Mark's story is a relentless and inspiring one;