DECATUR, Ga. (WXIA) -- "I'm a great, great executioner," is a phrase jurors heard from Hemy Neuman's own mouth during his murder trial on Friday.
Neuman made that statement during a videotaped interview with prosecution psychiatrist Dr. Pamela Crawford one year after the November 2010 murder of Rusty Sneiderman.
Sneiderman was gunned down outside a Dunwoody day care center just after dropping off one of his two young children.
Neuman admits the killing, but his lawyers are trying to convince a DeKalb County jury that they should find him not guilty of murder because he's insane.
Before resting their side of the case Thursday, the defense put up several witnesses who claim Neuman has a bi-polar psychiatric disorder that causes delusions.
He claims demons and angels drove him to kill Sneiderman so he could have his wife and rescue her children from the same type of abuse he suffered as a child.
Neuman was infatuated with the widow, Andrea Sneiderman, a co-worker at GE, who he claims shared an on again, off again romantic relationship on business trips.
But testifying for the prosecution on Friday, Dr. Crawford said she thinks Neuman is not insane and did know right from wrong when he shot Rusty Sneiderman.
Prosecutors played several clips of her November 2011 video interviews with Neuman.
In the video clips Neuman admitted that he methodically planned Rusty Sneiderman's killing, just as he would have planned any of the numerous work projects he managed for General Electric.
"He thought of stabbing him, but he said that would be too messy and he'd get stuff on him and he didn't think that was a good idea," Dr. Crawford testified.
"He thought about poisoning him and how he would go about doing that; he thought about staging an accident, but he said when he looked at each of those scenarios, he said that since his goal was to kill him, he didn't want to take the chance of just injuring him," she added.
In the videotaped interview, the jury heard Newman, himself, explain how he considered those various methods.
He also described how he rented a car, wore a disguise and snuck up to the Sneiderman home in a failed attempt one week before the actual killing.
But Newman said that attempt was thwarted when Rusty Sneiderman came outside to check on a gas leak and spotted Neuman lying in the yard.
At that point, Neuman said he fled on foot.
He also bragged at length in the video sessions with Dr. Crawford about how he juggled several multi-million projects for General Electric and earned exceptional reviews for most of his work.
That's when he said, "I'm a great, great executioner," to describe his abilities.
Dr. Crawford said anyone who was genuinely manic would not have been able to plan something like a murder in such great detail, but would have acted impulsively.
She said his approach to the killing was just the opposite.
"He said that he approached it as a project, as any detailed project that he does; in fact, he said, 'I did a concept review'," Crawford added.
In the videos he also told her about seeing demons and angels, but she said he does not exhibit the kind of mental behavior that would support those claims.
She pointed out he never mentioned the apparitions to anyone until he first told his defense attorney after being arrested for murder.
Dr. Crawford also said it was unusual that none of his family, friends or co-workers ever observed symptoms of his alleged manic depressive condition.
Prosecutors then called Neuman's former GE boss to the stand.
Eric Gebhardt testified that in the six years Neuman worked directly under him he never noticed any manic depressive behavior or anything that interfered with Neuman's excellent job performance.
"Was he having trouble keeping a grip on reality?" asked District Attorney Robert James.
"No," replied Gebhardt.
"Was there any reason to doubt his mental state?" James asked.
"No," Gebhardt said.
The state's final witness of the day was Dr. William Brickhouse, who runs the mental health program at the DeKalb County Jail.
He testified that he's observed and interacted with Neuman several times since his January 2011 arrest and never saw any evidence of delusions, hallucinations or anything else to suggest he is mentally ill.
Dr. Brickhouse will continue his testimony when the trial enters its fourth week Monday morning.