A German submarine has been operating off the Australian coast. A German agent is dropped off in Australia to arrange for it to be supplied. He is captured and Haber is sent in his place to set a trap for the submarine.
It is thought that a Japanese submarine had fired some shells on Point Kembla but it turns out that it was a German submarine. A German agent is captured and Cato persuades him to tell him all he knows. His task was to contact agents who supplied a German submarine operating off the Australian coast. Haber takes his place and is sent down the coast to find the contacts and set a trap for the submarines. Written by