„Killer Kay” is one of the mystery story from collection which includes the following short stories by Edgar Wallace, a famous British author of mystery genre: „The Business-Woman”, „Blue Suit”, „Battle Level”, „The Air Taxi”, „The Convenient Sea”, „The Vamp and the Librarian”, „Thieves Make Thieves”. Fast-paced, with good twists and turns, an unusual mystery scheme and a little romance. Edgar Wallace was an immensely popular British writer of mystery thrillers. Today, Wallace is still popular in Great Britain. His impact has been greatly felt in the German motion-picture industry, where many of his books were made into excellent screen thrillers.