Very pregnant Boston police Detective D.D. Warren has been put on desk duty and is essentially working as the police department's receptionist when she's given an opportunity to serve as the technical consultant on a thriller. Her boyfriend, Alex, has asked her to move in with him, and she has yet to give him an answer.Alex is called into the story pretty early on when his blood spatter expertise is required on the film shoot. A serial killer has been going after widows, using a chunk of tombstone ... which just happens to match up with the plot of the movie in question.I am not familiar with the D.D. Warren series or Gardner's work, but this was a great introduction to the character.This clever, quick mystery was given as a freebie to Audible.com members. I enjoyed it.