Trial told O'Hara's laptop contained documents on murder and silent killing

Graham Dwyer's trial has heard documents called "Murder Inc" and "21 Techniques of Silent Killing" were found on his alleged victim's Macbook computer.

The Cork born architect with an address at Kerrymount Close, Foxrock, Dublin denies murdering childcare worker Elaine O'Hara at Killakee mountain in Dublin in August 2012.