"Scott Watson" is a New Zealander who was convicted in May 1999 of the murders of Ben Smart and Olivia Hope on his boat Blade on 1 January 1998. The bodies of Smart and Hope have never been found. A sonar search of the entrance to Tory channel, an area of interest to the investigating police, found "there is no indication that the missing remains of Ben Smart and Olivia Hope are present or visible on the sea bed inside the search area".

Watson is serving a Life imprisonment in New Zealand/life sentence with a non-parole period of 17 years and is expected be released on 8 July 2016. The New Zealand Court of Appeal rejected an appeal by Watson. In 2003 Watson's lawyers Mike Antunovic and Greg King (lawyer)/Greg King applied to the Privy Council, it found no grounds for further appeal.

More Scott Watson on Wikipedia.

I think any opportunity to get your feet on a campus, it's going to remove some of the doubts, some of the anxiety, and some of the manifestations that tend to come from not knowing what's actually there.

It was a prudent act to go ahead and do a detailed search just to be on the safe side.

We didn't find anything - which is reassuring.