What Did You Do Before Dying? (Marge Christensen Mysteries)

Marge Christensen finds her husband dead in their garage, slumped over the steering wheel of his still running BMW. The police rule the death a suicide. Marge knows Gene would do no such thing, certainly not without giving her explicit instructions on how she should live the rest of her life.

When she begins to investigate, the first thing Marge discovers is that Gene had a terminal illness he hadn't told her about. The second thing she discovers is that most of their life savings is missing. Even her son agrees with the police that those two things gave Gene motive to kill himself. Marge is not convinced, but has to face the imperfections in her marriage while she perseveres with basic sluething and a little bit of daring to discover the truth.