Dupla Identidade (literally Double Identity; English title: Merciless) is a 2014 Brazilian crime drama television series created by Glória Perez.

However, his perfect man appearance is simply a mask that covers up his fearsome personality: a dangerous psychopath behind a number of crimes that have caught the police's attention.

Edu gets romantically involved with Ray (Débora Falabella), a compassionate and daring young woman who sees in him the personification of the perfect man.

Erratic and emotionally unstable, Ray bets everything on this romance, letting herself be manipulated by her boyfriend, without suspecting his double life.

Unable to solve the murders, the police put together a team equipped with the most advanced forensic techniques, led by Chief Dias (Marcello Novaes) and the psychologist Vera (Luana Piovani), a specialist in criminal behavior.