Archer and Bennett thrillers

"Twenty years ago, two children were kidnapped and left for dead. Raised by a master criminal, they grew up to become cops. Very unusual cops... Homicide detective Frank Bennett has an intriguing new partner. Dark, beautiful, coldly efficient, Eden Archer is one of the most enigmatic colleagues Frank has ever worked with--that includes her brother Eric, who's also on the Sydney Metro police force. All of them are tested to the core when a local man...

To stop a killer in the making, homicide detective Frank Benner must place his trust in his partner, Eden Archer, a cop who moonlights as a killer, while Eden, who knows the temptation of evil, must confront a fear she cannot escape.