Defense for Tsarnaev

The defense for Boston bombing suspect Dzhokhar Tsarnaev presented just four witnesses who talked about the science of Internet searches and fingerprints.
The defense case -- presented by Judy Clarke, David Bruck, Miriam Conrad and William Fick -- might have seemed scattershot so far, but there was a point: to pin the blame on the dead guy, the defendant's older brother 26-year-old Tamerlan Tsarnaev .
The defense will likely probe more deeply into Tsarnaev's relationship with his older brother.