Another article here from Sydney Morning Herald - has a video but my connection too slow to open
Cold execution of a truly awful death
Kim Arlington
September 4, 2010
Des Campbell, and the woman he murdered, his wife of six months, Janet.
IN THE last moments of her life, Janet Campbell must have realised she had made a terrible mistake in marrying Des. While she had been planning their future together, he had been planning her murder.
The end came six months after they secretly wed. On March 24, 2005, Campbell took his wife on her first camping trip. As the sun set over the Royal National Park, he pushed her off a 50-metre cliff.
.....and....
Interviewed by the Probation and Parole Service, Campbell said his first two marriages ended because of his extra-marital affairs.
His fourth wife, Melissa, a former nightclub singer from the Philippines whom he met on the internet two months after Mrs Campbell's death, is standing by him. They have two young children together.
Des Campbell jailed for at least 24 years