Ending "the Investigator"

Book #5 of five books of short stories about a real private detectives life from beginning to end. 19 short stories. Stories are taken for real case files.In this book the Investigators career is drawing to a close.
Charlie is losing friends, Associates and clients.Threats on his and Linda's life become clear to him that those making them are serious.
This series has twists and turns that are a surprise to everyone, including The Investigator.
This is last book in the five book short story series.