iPad exclusive: A riverboat tour through Singapore

      |This week, "48 Hours" travels to Singapore to investigate the death of American engineer Shane Todd. Michael Goodwin, Todd's friend and neighbor in Singapore, shows us the sights and sounds of the magnificent city-state. For more on Todd's case, watch "Spies, Lies and Secrets," Saturday, Oct. 5 at 10 p.m. ET/PT on CBS.

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