Naturals by Jennifer Lynn Barnes
Cassie and four other teens from varied backgrounds possess some unusual, possibly criminal, talents that have drawn the attention of the FBI. The Bureau, viewing them as potential crime-solving savants, decides to recruit them for a secret training program. Using cold cases to hone their skills and teamwork, the teens find themselves facing real-life predators and serial killers in these thrillers.
1) The Naturals
3) All In
4) Bad Blood