The Bathtub Murders

Imagine having kids who can speak five languages by their mid-teens. Daughters who are described by an experienced, senior childcare professional as the most intelligent she has come across in thirty years of working with adolescents.
Can there be a greater dream for loving parents? College awaits, then a top job with all that brings in terms of comfort and lifestyle. Who knows, these caring kids might even look after their mom and dad in old age. But the dream turned into a nightmare for one parent of super-intelligent children.
Linda Andersen's daughters certainly fitted that high IQ category; but unlike other clever kids, they used their intelligence for the most disingenuous of reasons: to plan the murder of their mother.