Dramatisation of the true story of the notorious 'acid bath murderer' John Haigh, who murdered women and disposed of their bodies in vats of acid in the 1940s. He was only caught when the gallstones of one of his victims failed to dissolve in the acid and were detected by the pathologist who examined the residue from the acid bath.
Finales del siglo XIX. Margaret Schlegel y su hermana Helen son dos mujeres cultas y emancipadas para la época en que viven. Su relación con la convencional familia Wilcox acaba en enemistad. Sin embargo, pasado cierto tiempo, se establece una estrecha relación entre Margaret y la señora Ruth Wilcox, quien, para disgusto de su familia, decide nombrar heredera de su mansión a la mayor de las Schlegel.
