" The Collinson sisters went on to act in a handful of movies together; they were especially effective and memorable as the titular radically contrasting siblings in the typically fine Hammer vampire horror outing "Twins of Evil.
The film, made for the 8mm market, was shot sometime between their British arrival, and July 1970, when a still from the film was used in a Marks' advert that ran in that month's issue of Continental Film Review magazine.
