A warning to listeners — this episode contains sensitive material surrounding homicide and assault.

On November 29th, 2012, a group of men broke into the Silicon Valley mansion of 66 year old investor Raveesh Kumra. The men attacked and tied up both Raveesh and his ex-wife who was living there, and then ransacked the home for cash and jewelry. By the time the paramedics arrived, Raveesh — who had also been gagged with tape — had died of suffocation.

A few weeks later, the police arrested 26 year old Lukis Anderson. Anderson, whose DNA had been found on Raveesh's fingernails, was charged with murder. But the night of the homicide, Anderson had actually been at a hospital many miles away, being carefully monitored. So how did his DNA get on Raveesh’s fingernails?

In this episode of Tiny Matters, Sam and Deboki unpack the history and evolution of DNA profiling and how new, more sensitive, technologies can be both incredible tools for picking up trace amounts of DNA to home in on suspects and a huge liability that can lead to wrong convictions.

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