Say goodbye

the long version

"Young women are disappearing ... girls who no one will notice have gone: prostitutes, runaways, high-risk teens. One night they exist, next morning they've vanished. But FBI Special Agent Kimberly Quincy, five months pregnant, has noticed. And when eighteen-year-old Delilah Rose claims to have inside information on the case, she will only talk to Kimberly. After all, they both have something in common: Delilah's pregnant too. Their only lead - a man who gets his kicks in the creepiest of ways. A twisted sadist with a brutal past, Kimberly soon realises she must become the prey if anyone else is to survive."--Publisher description.