The three-year-old daughter of Mark Mallen’s old friend has been kidnapped. And when a child goes missing from San Francisco’s notorious Tenderloin District, there’s not much of a chance that she’s going to be found.

But that won’t stop Mallen.

When his first lead takes him to a murder scene with a stash of child porn, Mallen knows he’s on the right track. Now the only people who can shake him off the trail are two SFPD detectives who seem to be more involved in the case than their job requires. Knowing all too well that skid row has its own set of rules, Mallen must act alone to serve justice to those who would put innocent children at risk.