The Australian women who fell in love with convicted killers.

It’s a question often asked – how could anyone fall in love with a convicted killer?

On tonight’s episode of 60 minutes, Peter Stefanovic will attempt to find an answer.

Stefanovic will go inside two of the most unlikely and controversial relationships of recent times – the Australian women who fell in love with convicted criminals, while they were serving life sentences.

Danielle Laskie started a pen pal relationship with 30-year-old Tim Wright, but it quickly blossomed into romance and she married the convicted killer inside one of America’s high security jails.

“His profile was so simple,” Danielle told 60 Minutes.  “It just said ‘My name is Tim Wright, I enjoy reading, I like listening to music and I was a Marine’.  And that was it.”

“How did you say yes without even meeting him? 8.30 SUNDAY | The Australian nurse who married a murderer sentenced to life behind bars. pic.twitter.com/PHjukyFxhQ

— 60 Minutes Australia (@60Mins) March 14, 2017

Wright was convicted of murdering Justin Baumgardner in 2008. At trial, the prosecutor claimed Wright killed Baumgardner over a common love interest — a 17-year-old girl.

The 47-year-old Melbourne nurse began to research Wright’s case and she is now convinced that her husband is innocent. In fact, she’s now working tirelessly to fight for Wright’s freedom.

Just like Danielle, Perth teacher Barb Santek fell in love with a convicted killer.

The mum-of-six initially found out about Tyrone Hood and his case through Amnesty International.

Hood, 53, was convicted of the shooting death of Marshall Morgan Jr., an Illinois Institute of Technology basketball standout, and had been serving a 50-year prison sentence. He had long maintained his innocence and said Chicago police should have investigated Morgan's father in the killing.

Santek was baffled by Hood's conviction and sent him a letter of support. The letters soon turned into phone calls, and then visits, and then the pair had fallen in love.

Santek spent 15 years fighting for Hood's freedom and he was eventually exonerated and released from prison in 2015.