The last time a 26-year-old plunged a knife into his father's long-time friend it went so deep the handle as well as the 20cm blade penetrated the man's chest, a court has been told.
Cody James Finemore admits stabbing 55-year-old Peter Ward, but pleaded not guilty to murder at the start of the Brisbane Supreme Court trial on Tuesday.
In the months before Mr Ward's death in November 2019 he and Finemore, now 26, both had a sexual relationship - one paid and the other "spontaneous" - with the same woman, the jury was told.
