Mouth of Truth is the unique story of a woman trapped in the vault of family secrets, part of her still a hidden child, some 40 years after the Second World War. Following a crisis, she leaves her home and children in search of the truth about her beloved father, a Jewish policeman in the Warsaw Ghetto. The story reveals how unhealed childhood trauma of a parent can be transmitted from one generation to the next, destroying families and other relationships in its wake.