It was a pilot for a proposed series that was not picked up but which aired as a stand-alone production.
[1] It aired on Channel Seven along with a number of pilots for series, including The Group, Catwalk, Kill and Cure and The Undertakers.
[2] Jim Oswin, General Manager of ATN-7, said "we are going to make them and we are going to play them.
[4] It was remade as another pilot, the TV movie And Millions Will Die.
They are called in to investigate a series of mysterious deaths and trace it to a lady giving out a home made tonic.