Ellipsis — Stephen Greenleaf

Against his better judgment, John Marshall Tanner takes a job as a writer's bodyguard

Somebody wants Chandelier Wells dead. After years churning out bestselling bodice-rippers, she's the best-known author in San Francisco, and she's no stranger to receiving threatening letters. But the most recent ones seem different. They feel real. Ms. Wells knows her life is in danger, and the only man capable of protecting her is John Marshall Tanner.
 
Tanner is a private detective, not a bodyguard, but at Ms. Wells's rates, he'll be anything she likes. He soon finds that her life is a chaotic one though. Between crazed fans, a jealous ex, and a scheming agent, Chandelier Wells has no one she can trust. When her chauffer is killed by a car bomb intended to erase her from the bestseller lists, Tanner knows that the life of this Chandelier is hanging precariously in the balance.
 
Ellipses is the 14th book in the John Marshall Tanner Mysteries, but you may enjoy reading the series in any order.