Murder in the Lighthouse (Brianna Kelly Paranormal Mystery Series) by Shirley B. Garrett

A naughty ghost is haunting historic St. Augustine. Bitsy asks her college friend Olivia to help. A renowned psychic, Olivia summons her ghost-wrangling daughter Brianna, and Brianna’s best friend Mystery Jones to join forces in the hunt. But the vexing haint is as stubborn in death as he was in life.

Nobody expected that Brianna’s dog, Prissy, would once again sniff out a murder victim…and that Bitsy would be the prime suspect