Maureen Boyce murder: Supreme Court releases key exhibits in trial of Thomas Lang

Maureen Boyce murder: Supreme Court releases key exhibits in trial of Thomas Lang

Maureen Boyce murder: Supreme Court releases key exhibits in trial of Thomas Lang

Updated 7 December 2017, 19:00 AEDT

The Supreme Court releases key video evidence that led a Brisbane jury to find Thomas Lang guilty of the stabbing murder of his lover and "fiancee" Maureen Boyce.

Convicted murderer Thomas Lang sounds flustered and confused as he calls triple-0 to say he has just woken up to find his "fiancee" Maureen Boyce in bed with a knife in her abdomen.

After the connection was lost, Lang called again, now sounding more composed as he described the grisly scene.

Hours earlier, the American doctor had stabbed the mother-of-two to death in a jealous rage.

She was stabbed so deep she was impaled to the bed with the knife protruding from her back.

In the wake of Lang's conviction, the Supreme Court has released key evidence in the case, including police bodycam vision and the recording of Lang's call to report Ms Boyce's death.

Lang told the emergency operators the death looked like suicide.

"I just woke up this morning and found my fiancee dead in her bed with a knife in her abdomen," he said.

Upon mention of the knife, the first operator sounded shocked and asked if there were any signs of forced entry.

Lang said: "There's been no forced entry ... it looks self-induced from what I can tell."

The call lasts about one minute.

When police arrived at Ms Boyce's Kangaroo Point penthouse on October 22, 2015, an officer switched on a bodycam that captured his initial interview with Lang.

Lang pointed towards the bedroom and then paced around the apartment looking for his identification.

He was then taken into a separate room and asked about what happened.

"I went to bed back there and woke up this morning to find this," he said.

At this stage, paramedics were in Ms Boyce's bedroom having already established that she was dead.

"She was very distraught last night, drunk a lot of alcohol, took some pills," Lang told the officer.

"She's had psychiatric history in the past, ECT a couple of times."

Lang told police Ms Boyce grabbed her mobile phone and "winged it off the balcony" about 9:00pm because she was stressed about failing to sell her apartment.

Police were able to recover data from the smashed phone, which revealed it was last accessed closer to midnight when a text message from another former lover was viewed.

In his formal interview with police, Lang continued to lie and denied any involvement in Ms Boyce's death.

Detectives informed him her son Zachary had told them his mother wanted Lang out of her apartment and that she was actually planning to resume a relationship with her husband, Graham Boyce.

Lang said he knew nothing of this, but said she had "a lot of secrets".

"Did I kill Maureen? No, I didn't stab her," he said.

"Violence scares me. I hate violence. I loved her with all my heart."

On Tuesday, a Supreme Court jury took less than two hours to find Lang guilty of murder.

He was sentenced to life imprisonment.