Rosalyn Landor

The Enterprise crew are caught in a culture clash between two races fighting for survival when the crew's rescue of a missing earth colony leads to the discovery of a civilisation composed entirely of clones.

Julia Stoner has lived alone with her step-father, Dr Grimsby Roylott since the strange death of her sister two years before. Holmes and Watson establish that the stepfather keeps a deadly snake - 'the speckled band' - which he intends using again as the murder tool. But what are his motives?

A famous British photographer is suspected in the serial slayings of prostitutes, but the investigation hits many complications.