Professor Thaddeus Bartholomew had just enough time left to send one text message before he was brutally burned to death. And his final text said just three words - Find Grace Descanso.

But Grace Descanso, single mother and crime scene investigator for the San Diego Police Department, is finally taking a vacation with her daughter in hopes of reconnecting with her daughter's father. When the FBI demands that Grace return to San Diego, she decides to leave her daughter with her father in paradise.

Grace wasn't called in for her crime scene expertise, but for her knowledge of DNA - specifically, how genetically modified foods affect the DNA of human beings.

Very soon, the highest leaders in politics, big business farming and DNA scientists will all converge at the world's largest agricultural conference. Also to be present? Extremist eco-terrorists.

The fact that Professor Bartholomew stalked and threatened Grace after her recent lecture on using DNA for police profiling and that his final text was her name - and that his brutal murder took place in a field of genetically modified soybeans all means that this is just the beginning of something much, much larger.

When Grace finds out that her cousin is involved with an eco-terrorist group that's planning a disastrous strike in the near future, she's once again rushing to beat the clock...tick tock, tick tock - will she be able to put all the clues together in time? Or will the entire agricultural conference go down with a bang...