A broken apple tree never blooms again. That's what the captain of the investigative team, Christian Tyler, a thirty-seven-year-old widow without children, thought. Left without a family, she abandoned all her hobbies, plunging headlong into work, which turned out to be much more routine than expected. But Christian slowly begins to wake up when serial murders overwhelm her city. Until she realizes that crimes, like the roots of a tree, are intertwined with her past…