From the Publisher:
"Light Thickens" is Ngaio Marsh's last crime novel, completed shortly before her death in 1982. She wrote over 25 detective novels. She was also an actor and producer and was instrumental in the revival of New Zealand's interest in the theatre for which she was made a Dame in 1966.
Ngaio Marsh: Light Thickens. St. Martin's Press; ISBN: 0312973144 (April, 2000); 240 p., $5.99