West Coast cold case: Who killed David Robinson?

Geal parked up and wandered over. As he got closer the shape took form. It was a bloated body, burnt by the sun, but it wasn't a seal.

It was a man, face down in the sand, wearing only a pair of blue jeans. Had Geal rolled the body over he would have seen the bullet hole in his forehead, but Geal didn't touch a thing. By the look of him, he thought the man must have been dead for some time.

The body was soon identified as David Robinson. There were few other clues about how he died. A right foot size-12 boot with the shoelaces tied together was found near him. There was no sign of a gun.