ELAINE O'Hara told her father she asked a married architect to kill her but he wouldn't, the Central Criminal Court heard.
Frank O'Hara said that he was "shattered" on hearing this.
Mr O'Hara also said he was shocked when his daughter told him the man she was seeing was performing sex acts while she was tied up. He was giving evidence on the second day of the trial of architect Graham Dwyer (42).
Mr Dwyer, of Kerrymount Close, Foxrock, is pleading not guilty to the murder of Ms O'Hara (36) at Killakee, Rathfarnham on August 22, 2012.
Ms O'Hara, from Killiney, was last seen alive near Shanganagh Cemetery in Shankill. Her remains were found in undergrowth in the Dublin mountains on September 13, 2013.
see pages 2-4