E-book exclusives: Afterword: "Roots of Mystery: Sodium Azide and Learning to Believe the Unbelievable" by J.A. Jance. Special environmental report: "It Will Kill Practically Anything": Do you drive a 1994 or newer car? If so, you're sitting just inches away from a deadly poison.Sheriff Joanna Brady and Seattle cop J.P. Beaumont, working together for the first time, must solve a murder that involves a deadly, and very real, toxin.A terrifying truth is buried at the juncture where lethal greed and unassailable power converge.