Graham Dwyer's murder trial has heard he allegedly sent a text message to Elaine O'Hara saying 'you help me stab a girl and you won't get knifed'
The architect of Kerrymount Close, Foxrock denies killing the childcare worker at Killakee mountain in Dublin on August 22nd 2012.
Graham Dwyer is alleged to have used a secret prepaid mobile to contact Elaine O'Hara on her iphone as part of a BDSM relationship.
In texts to this phone in 2011 the childcare worker calls the man 'sir' and describes herself as 'your slave'.
In these exchanges the man describes himself as a 'sadist', says he'd like to 'stick a knife in flesh' when aroused and that he'd 'like to stab a girl to death some time'.
In July 2011 he outlines different ways he could kill the childcare worker including stabbing her in the woods and leaving clothes near the sea to make it look like she drowned.
She replies that she doesn't want to die from stab wounds and that she'd prefer to die when she's older.
