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This is one of the craziest stories that we have covered. 

It takes place over the course of a few weeks in Sydney, Australia in 1935. 

A shark was captured and placed on display in a tank. The shark threw up an arm, with a distinct tattoo. This led investigators to a missing person, which turned into a murder investigation. 

When investigators started narrowing in on a suspect, he attempted to take his own life, when that didn't work, he led cops on a boat chase (yes, a boat chase). Once he was caught, things in the case changed drastically...