Widow's web.

Couldn't stop reading it once I started. One of the best suspense novels by Ursula Curtiss The widow was a KILLER. Martin Fennister's death was officially listed as a suicide. Annabelle his widow inherited a mere 30,000 dollars. Then Gerald Mallow died in a mysterious accident automobile accident. He had a lot of money and he left it all to his beautiful secretary. The secretary was Annabelle! This is the story of a man who set out to trap Annabelle. He swore he would make her confess to double murder It has a smash ending that will take even the most experienced reader of mystery fiction by surprise-Boston Herald