Even if it takes an eternity, he will make amends... .

"BY THE BOOK"

Widow Mildred Finster is a life-long fan of "cozy" mystery novels. She decides at the tender age of seventy-one that she'd like to become a real private detective. She finds a card for Angel Investigations and thinks the name sounds very sweet. After all, she loves angels. What could be more perfect?

Angel and the gang are hip-deep in their own personal problems, so when Mildred offers her services, they don't have much time for her. And when a truckload of antiquities from a local mission is stolen, they don't get too worked up over what they think is a simple theft. But the arrival of some ruthless killers from overseas finally gets the gang's attention.

Now they are being followed at every turn by a well-meaning old lady, fighting off attacks from poltergeists, and trying to set their personal differences aside to defeat a supernatural foe before a centuries-old mystery reaches its final chapter.