Day five of Claremont serial killer trial

DAY FIVE OF THE CLAREMONT MURDERS TRIAL:

* After being admonished several times during pre-trial hearings over late disclosures, prosecutor Carmel Barbagallo was taken to task over last-minute changes to the witness list as it gives the defence little time to prepare for cross-examination

* She said "things don't always go according to the plan" but Justice Stephen Hall said "that doesn't fill me with enormous comfort ... I'm concerned that there's these sort of things happening"

* Former Telstra colleague Murray Cook was the first to testify, saying he became friends with Edwards in September 1995, they bonded over pool and the accused "didn't deliberately" raise the issue of separating from his first wife

* After being diagnosed with multiple sclerosis, Mr Cook expected Edwards to join him and his wife Brigita at a property south of Perth on a Friday night in March 1997, but he arrived the next morning claiming he'd been trying to reconcile with his first wife

* Ciara Glennon was murdered that night

* The first wife earlier testified Edwards never spoke about their separation or asked her to return

* Brigita Cook backed up her husband's testimony about Edwards arriving late, saying they "had no reason not to believe what he said" about reconciling with his first wife and "didn't hear what happened" to Ms Glennon in the media

* Ms Cook said Edwards brought an older woman over for dinner one night, adding she wore a lot of jewellery and was flamboyantly dressed. "I just thought at the time 'good on him, he's found somebody'," she said

* She and her husband rejected the defence's suggestion they were confusing Edwards' break-up with that woman when they recounted him saying he tried to patch things up with his ex-wife

* Mr Cook also said Edwards did not drink much and he only ever saw him overdo it at a New Year's Eve party

* Another ex-Telstra colleague and friend, Paul Luff, earlier said Edwards was "a bit depressed", "not a very expressive person" and "drinking quite a lot" with Mr Cook

* Telstra worker Wayne Chivell said the company had magnetic decals to put on the sides of vehicles and also blank ones to cover up permanent decals on occasions when they didn't want competitors to know they were there

* Edwards' work cars are central to the prosecution's case as he also used them in his personal time and it is alleged he abducted victims in those vehicles after prowling around the Claremont area.