Frank: Knocker, my boy.
Knocker: G'day ... Guy Bland died of heart failure. He was tossed into the drink after he died.
Frank: Yeah but what happened to his head?
Knocker: Pathologists say a shark took it.
Kevin: Heart failure? Those guys are awesomely fit.
Rachel: Maybe hereditary?
Knocker: It wasn't. I checked with the family doctor. It was brought on by hyperkalemia. High blood potassium.
Rachel: What are you saying, someone injected him with potassium?
Knocker: Certainly looks that way.