Fatal Secrets by Allison Brennan (FBI Trilogy #2,Very Good, 2009, Pbk, 438 pages, Ballantine Books)

In very good condition: cover has light wear; pages are unmarked. ISBN 9780345502759

When a top lieutenant in a notorious ring of human traffickers agrees to turn state’s evidence, Immigration and Customs Enforcement senior agent Sonia Knight believes she’ll finally take down the illegal operation’s devilish mastermind, Xavier Jones. But when an FBI sting on Jones’s criminal enterprise collides with an ICE stakeout, Sonia is enraged: Her informant’s life and her evidence are in grave jeopardy.

FBI agent Dean Hooper has been chasing Jones for years on money-laundering and tax-evasion charges and doesn’t need or want a hot-headed ICE agent second-guessing his every move. When the Bureau is ordered to join forces with ICE, Sonia is just as livid: Her job is to save lives, not money. But their team effort pays off as fierce mutual resentment fades and passion flares–along with risk.

For Jones is just one piece of a depraved puzzle, answering to an even more dangerous predator. Denied his expected prey, this pitiless fiend intends to make Sonia and Dean pay with their own blood.