A supposed violent break-in - which left Catherine Nevin's husband dead - was initially seen as a robbery gone wrong... until police dug deeper.

In 2005, Farah Swaleh Noor's body parts were found in a Dublin canal. Soon, his partner and her daughters came under the microscope. 

When Mary Gough was found dead in 2001, her husband appeared shocked before his web of lies and deeply sinister intentions were brought to light.

In 2004, Joe O'Reilly murdered his wife and made it look like a burglary gone wrong. Before being caught, he even appealed for information on TV.