Free Fall
by Robert Crais
Book 4 in the Elvis Cole series (1993)
Publisher: Orion
Jennifer Sheridan is just over twenty years old. She has a sweet character, a good job, and is engaged to Mark Thurman, the man she has always loved and wants to marry. Life would be perfect if Mark, a Los Angeles Police Special Squad agent, had not been so anxious and aggressive for some time. The man is unrecognizable and she is sure that he has gone into a bad mess.
So Jennifer turns to private detective Elvis Cole, who takes Jennifer her case. Soon, Cole and his partner Pike are plunged in police corruption, gangs, and the depiction of themselves as armed killers.