He has pleaded not guilty to those charges, and an additional break-and-enter offence. Our reporters have been live-blogging since the trial began.
In Friday's evidence, Lamarre-Condon is providing his version of Baird and Davies' deaths. He says he shot Baird in the chest, claims he tried to save Baird's life, and Davies then approaching with Lamarre-Condon's weapon.
Lamarre-Condon insisted to the jury that he did not kill Davies, but that he shot himself during a struggle, and then 'passed out' on the couch after the pair's deaths.
00:14
Breaking:Lamarre-Condon describes the moment Jesse Baird died
Lamarre-Condon has outlined the way he claims Jesse Baird was killed.
He claimed he found Baird holding a knife and masking tape.
'He started yelling "we're getting robbed", "we're getting robbed",' he said.
Lamarre Condon claimed Baird could not tell it was him.
'He had the knife, he dropped the tape, and he lunged at me. I immediately grabbed ... his right hand with my left hand and my right hand to pull the knife away from me, and I said, "Jesse, it's Beau, it's Beau, it's me. Calm the f**k down!"
'And he wouldn't register what I was saying ... His adrenaline was through the roof.'
Lamarre-Condon claimed he repeatedly told Baird to drop the knife, which he claimed was by then at his throat.
The alleged killer claimed he feared for his life as Baird slashed open his shirt with the knife.
'I didn't want to kill him,' he said.
Lammare-Condon claimed his police training forced him to shoot him in the chest.
'I guess it's just my instinct. Police training, as police officers, we are trained to shoot people at the centre body mass to kill a person, to stop the threat, and to kill them. I did not want to do this to Jesse.'
He claimed he aimed at Baird's right shoulder, which forced the knife out of Baird's hand.
(Below, Luke Davies is pictured on left, and Jesse Baird is on right).
01:20
Lamarre-Condon denies 'pew pew' remark after alleged murders
Lamarre-Condon has denied telling a mate how he killed his two alleged victims.
'Did you ever make a sign with your finger and thumb, with the index finger pointed forward and the thumb pointing up, and say "pew pew",' his barrister asked.
'I've never said "pew pew" in my life. That's something maybe a kid would say, but I've never said that,' Lamarre-Condon said.
'That's something that (my mate) probably would joke around and say, but that never happened.'
Lamarre-Condon denied ever telling that mate he shot 'the first one through the head and the second one through the door'.
'I didn't. I told (him) that the first shot got Jesse through the shoulder and went out through the door, referring to the open back door, and that the second shot had got Jesse in the head,' he said.
'Nowhere did we discus a third gunshot because I never talked to him about ever shooting Luke because I didn't shoot Luke,' he said.
01:16
Lamarre-Condon tells court how he cleaned the alleged crime scene
Lamarre-Condon claims he can't remember where he placed the bullet that killed Luke Davies.
The former cop claimed he used a screw driver to remove the bullet, which he claimed had lodged in a bedroom door after exiting Davies' skull.
'I don't even know what I did with it. I threw it somewhere. I don't remember, but I got it,' he said.
The court heard Lamarre-Condon's version of events about how he went about disposing of his alleged victims' bodies.
On February 20, Lamarre-Condon said he returned to the scene of the alleged crime and cleaned Baird's bedroom.
He told the court he loaded all of Baird's belongings into a van, telling a another friend he had killed Baird.
'(She) then told me that essentially, if I go to police, there's a chance I wouldn't be believed, and I'll be charged, and I would get killed in jail,' he claimed.
'She said that she watches a lot of crime documentaries, and that what we need to do is get rid of the bodies. And she would refer to the Taylor Swift song, "No Body, No Crime.".'
01:13
Lamarre-Condon claimed he didn't call police because 'it didn't feel real' and feared he would be killed in jail for being a cop
Lamarre-Condon didn't contact police after the shootings because he didn't think it was real.
'It honestly it did not feel real. I've had a similar situation when I've gone to suicides where I've had an out of body experience, and it's literally taken me a week after work to process that what I actually saw as a first responder was real,' he said.
'All I can explain it is it just felt like I was detached from my body and having an out of body experience. And all I was thinking about at that time was it this isn't real, and if it is real, the housemates when they come home are going to be traumatised, and I can't let them see any blood or anybody.'
Lamarre-Condon said he struggled for some time to establish what had happened was real.
'I realised that s**t, this is real? It was like having a moral dilemma where I knew I should do the right thing and go to police and tell them everything and the truth, but I knew that truth was I was guilty of manslaughter and manslaughter carries a maximum penalty of 25 years, and I'm a police officer,' he said.
Lamarre-Condon said he was terrified of going to jail because he knew he would be a marked man.
'If I go to jail, police officers put people in jail. People in jail want to kill cops,' he said.
01:06
Lamarre-Condon wanted to talk to someone to validate his experience, after allegedly killing two men
After allegedly murdering Jesse Baird and Luke Davies, Beau Lamarre-Condon needed to talk.
'Things just didn't feel real, and I just wanted to talk to anybody or somebody to just validate what I was experiencing was real life or a delusion or some sort of out of body experience,' he said.
He rang a mate, who cannot be named for legal reasons, and confided in him that people were dead.
'I said, "I've killed somebody, referring to a singular person. And (he) goes, "What the f**k? Are you serious?",' he said.
Lamarre-Condon claimed he did not know who Luke Davies was.
'(He) goes, "What? Who was it? A housemate?" And I said, "No, it wasn't a housemate. I saw the housemates leave."
'I then said, "I didn't shoot the second person". I wanted to call police back, but I couldn't have them make out that this was a domestic or that I shot a witness.'
00:58
Beau Lamarre-Condon 'passed out' after alleged double murders
Lamarre-Condon claimed he had an 'out of body experience' after he allegedly murdered two men.
'I just remember hyperventilating, and this is when it felt like an out of body experience,' he said.
'It was like I was floating above my body and looking down at myself from third person, and everything around me just didn't seem real.
'It was like ... someone else watching myself, and I just remember coming in and out of my body like I was disassociated from my body, and then I could see myself hyperventilating and having a panic attack, and then I went to the couch, lay down, and I passed out for a period of time.'
00:32
Breaking:The moment Luke Davies died, according to his alleged killer: 'My hand did not touch the gun'
Lamarre-Condon claimed Luke Davies died by shooting himself as the policeman tried to disarm him.
'He put his left index finger on the trigger, and I thought he was going to shoot me. So I watched the gun the entire time. I did not get my eyes off the gun,' Lamarre Condon said.
The former cop said he watched the bullet leave the back of Davies' skull and lodge into the bedroom door.
It is the same door police allege Lamarre-Condon shot Davies through to eliminate him as a witness to the alleged murder of Jesse Baird.
'My hand did not touch the gun in this movement,' he claimed.
00:25
Luke Davies threatened to shoot Beau Lamarre-Condon as the former cop tried to save Jesse Baird's life, jury told
Lamarre-Condon claimed he was trying to save the life of Jesse Baird when Luke Davies appeared holding his firearm.
'I said, "Please don't shoot me. I'm not here to hurt you. You can take the gun and leave. Get out!",' he claimed.
'And I was screaming because obviously my ears were ringing out, so I couldn't hear a thing.
'And that was to pretty much say to Luke that I'm not a threat. You can keep my gun. Take it. Just get out of the house. I'm not a threat. I'm not here to hurt you. And that's when he raised the gun towards my head, and that's when he said "f*** off"'.
Lamarre-Condon claimed his police training kicked in again as Davies threatened to shoot him.
'I immediately thought, "f**k, he's gonna fire the gun." He just told me, "I'm gonna f***ing shoot you." Now he's raising the gun towards my head, and that's when again my police training kicked in,' he said.
00:19
Lamarre-Condon claimed he tried to save Jesse Baird after shooting him through the head
Lamarre-Condon claims to have tried to save the life of Jesse Baird after shooting him dead.
'I couldn't tell that it was a the bullet that had gone through his head. It just looked like possibly it had scraped the side of his head,' he said.
'So I get up, I get into the kneeling position, I look at Jesse, and again it's now I'm into police mode. It's what do.'
Lammare-Condon claimed he checked for a pulse and pleaded for Baird to wake up.
'I started saying, "Jesse, Jesse, can you hear me? Please wake up. Please squeeze my hand if you can hear me.",'
He claimed to have put Baird into the recovery position, when he said Luke Davies approached carrying his gun.
00:16
Lamarre-Condon claims he accidentally killed Jesse Baird, again admitting he pulled the trigger that killed his former lover
Lamarre-Condon has again admitted to the manslaughter of Jesse Baird.
'My finger was on the trigger, not Jesse's, and I must be truthful, and I must take accountability that I'm responsible for. But it wasn't intentional,' he said, wiping his eyes.
'His hand was not on the trigger; it was my fault. And I've said from the start, I am guilty of manslaughter, and I'm responsible for his death.
'But it wasn't intentional, and this is where we were either falling to the ground, or as we impacted the ground, the gun discharged.'
00:09
Lamarre-Condon claimed he wanted to get his surfboard out of Jesse Baird's ute on day he allegedly murdered him and Luke Davies
Lamarre-Condon has been taken to the day his alleged victims died.
'I wanted to be 110 percent certain, like I was going into that house to get my stuff, that no-one was home,' he said.
The court heard he watched as Baird's housemates left his home, telling the jury he believed Baird was already out.
Lamarre-Condon claimed he had been concerned Baird would get an intervention order placed on him if he came to the house 'because Jesse told me please refrain from contacting me,' he said.
He told the court he parked his car and noticed an Uber Eats rider nearby.
Not wanting to leave his police-issued gun in the car, he took it with him.
'If someone broke into in my car and stole my gun, I'd be in a lot of s***,' he said.
Enroute to the cafe Lamarre-Condon said he swiped the Uber Eats rider's gear.
Breaking down yet again into tears, Lamarre-Condon outlined his plan.
'I had the thought process off, If I was to put on this helmet, a motorcycle outfit, and look like a delivery driver, I could knock on Jesse's door, and if he answered the door, he wouldn't be able to see my face,' he said.
'I would look like an Uber Eats driver, and that way, I couldn't be falsely accused of harassment ... I could just say wrong address walk away without any verbal argument or confrontation with Jesse.
'And if he wasn't home, I could enter with a spare key that he got cut for me and go in and get my belongings.'
00:07
Lamarre-Condon describes dressing up as Uber Eats rider before going to Jesse Baird's home
Lamarre-Condon claimed the door of Jesse Baird's home was open when he initially attended.
Not wanting to go inside, he claimed to have backed off and gone for a walk.
On his return, the door was still open and he knocked three times.
'I pushed open the door further, but with my hand, I opened fully. I stepped into the entryway and I yelled out "hello" in a really loud voice, and I got no response. And I couldn't hear or see anyone in the house,' he said.
He told the court he snooped about before investigating some storage boxes in the hallway.
Baird had been in the process of moving out of the Paddington home when he was allegedly killed.
Lamarre-Condon said he noticed more storage boxes in the kitchen and proceeded there.
'I saw someone's arm, their left arm, push up into the back door like they were just opening the door and entering the property. I immediately ran upstairs,' he claimed.
The court heard he ran into the bedroom of Baird's housemate where he hid behind the bed, still wearing the helmet.
Lamarre-Condon claimed he thought he heard someone calling the police, but was unsure who it was.
'After two minutes, I heard a door shut. So I assumed that it must have just been someone on the phone, and they were going to leave, and they did leave by shutting the door.'
