In Argentina, 19-year-old model Johana Casas was shot dead just days before her 20th birthday. Witnesses said her ex-boyfriend, Victor Cingolani, was the shooter. He was convicted and sentenced to 13 years in prison.

But behind bars, Victor planned a wedding. His bride? Johana’s identical twin sister, Edith. Their mother begged her to stop, even took her to court, but Edith passed a psych evaluation and married Victor on Valentine’s Day 2013 as protesters threw eggs outside the prison.

Then came another twist. A second man, Johana’s controlling boyfriend Marcos Díaz, was also convicted of the same crime. With two men imprisoned for one murder, Victor’s conviction was overturned, and he was set free. Edith welcomed him home, but the marriage later fell apart.

So who really killed Johana Casas?

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