Angel's Verdict (Beaufort & Company #4) by Mary Stanton.*
Bree and EB receive a visit from elderly actress Justine Coville, who says that she'd like to update her will. But before she leaves, she admits that she thinks that someone is trying to injure her on the set of Bitter Tide, a movie being made about Savannah's infamous 1950s B-actress Haydee Quinn.
Justine is playing the role of Consuelo Bulloch, and is using one of Consuelo's brooches to help her feel a connection to the character. But when Bree touches the brooch, she senses that Consuelo wants her help.
Not sure what she can do to help either of them, Bree takes both cases, and soon discovers that they have even more in common than she'd first thought.
The concept that when Bree takes over her late Uncle Franklin's law practice, she also accepts proprietorship of his celestial business of defending condemned souls is unique. Stanton has created two believable, intertwined worlds which feel fresh and intriguing after four books, and leave the reader wanting to know more.
*FTC Full Disclosure: Many thanks to the publisher, who sent me a copy of the book for review purposes.