I Came To A Castle/Castle Perilous — Velda Johnston

INVITATION TO A HOLOCAUST

She came to the ancient and fearsome Castle Estillio as the guest of a rich scientist and his frivolous sister. But she quickly realized that she was a prisoner among madmen. The bizarre tower which had been turned into a modern laboratory...the grim dungeon with its macabre instruments...the legendary tunnel which no one dared speak of...even the handsome, enigmatic stranger whom she longed to trust...all were essential to the grotesque experiment for which she, Dinah Haversham, had been carefully chosen...