A Mind to Kill — Brian Freemantle

Sixteen people saw her kill her husband, but Jennifer swears she is innocent

The traders call the office “the goldfish bowl” because its walls are all glass. There is no privacy, not even for office manager Gerald Lomax. And so it is that everyone in the office watches him die.

Gerald's former mistress, Jennifer, married him when his first wife, Jane, passed away. Married for six years, their life seems blissful until the day she brings a kitchen knife to his office and stabs him to death in broad daylight. It is an open-and-shut case, but Jennifer pleads innocence, claiming that it wasn't she who stabbed him -- it was Jane, possessing Jennifer's body to take revenge on her unfaithful husband from beyond the grave. Is Jennifer mad? Is she lying? Or might her tale of supernatural possession hold a sinister truth?