Due out in the UK September 29.

Abused women are entering a secret "underground railroad," expecting to escape their tormentors and arrive at a new life and identity. But a killer is loose in the system, protected by its anonymity. Carson and Harry must send an undercover agent into the system and hope she can find the killer before the killer finds her. The trail takes them from Boulder, Colorado, to Mobile, Alabama, and drops them into a nether world of angry men sick with misogyny. And the undercover cop sent into the system? She adds a few complications of her own.

Announcing a U.S. source for the books!

The books can now be ordered from famed Houston bookstore, Murder by the Book, www.murderbooks.com.

Note: The US-published book, A Garden of Vipers, is the same as the UK-published The Broken Souls.