"A Splash of Scarlet" is the sixth book in the Frank Harper Mysteries series.

"With his biggest case behind him, ex-cop Frank Harper gets back to work...He's been investigating a mysterious death, one tied to a manufacturing company in Cooper's Mill. The owner, the victim's daughter, is convinced her father was murdered -- and that his death is somehow tied to large amounts of money that went missing from the company. While Frank investigates, his mind is drawn to the missing Joe Hathaway, a psychopath bent on killing Frank. Everyone else is convinced Hathaway is dead or out of the country, but Frank Harper isn't so sure..."