This is the moment a double murderer was arrested 24 hours after he killed his ex-partner and her nine-year-old autistic son.
Daniel Boulton walked for 28 miles to stab Bethany Vincent, 26, and her nine-year-old son Darren Henson to death at their home in Louth, Lincolnshire.
He sparked a 24-hour manhunt before finally being arrested on a farm.
Today, Boulton, 30, was jailed for life with a minimum term of 40 years after he was found guilty of murder.
A court heard how Boulton had developed a “hatred” for Darren, known as DJ, and had “feared” that the young boy's condition would affect his own son.
Boulton “loitered for hours” outside his victims’ home before launching his attack in front of his nine-month-old baby on May 31, last year.
When emergency services arrived at the property, the nine-month-old was found crawling around the house, and the court heard the killer left a note saying: “I, Daniel Boulton, take full responsibility for 182", which was the number of the property.
Boulton then led Lincolnshire Police on a 24-hour manhunt, which came to an end when he stabbed an off-duty police officer in the leg before being tasered and arrested on a nearby farm.
The arrest was captured on camera by a helicopter tracking him from above.
Boulton, of Alexandra Road, Skegness, admitted manslaughter on the second day of his trial, as well as assault with intent to resist arrest, and burglary, before being convicted of two counts of murder.
At his sentencing hearing today, the judge told Boulton there was a possibility he may never be released.
Mr Justice Pepperall told the killer: “I’m sure that you targeted DJ because of your hatred and you were motivated by his autism.
“I’m sure that you are a violent and very dangerous man, and you present an ongoing risk of further violence, and possibly even homicide.
“You killed with ruthless efficiency very soon after breaking into the house.
“You acted calmly, callously and efficiently … you intended to kill, you knew precisely what you were doing.”
The court heard how Boulton had told a "number of different people" he wanted the young boy "dead and out of the way".
The judge told him he had an "irrational fear" that DJ's autism "would somehow affect your own son".
“There is ample evidence that you are manipulative and controlling," he told him.
"Your violence to Bethany Vincent was, I am satisfied, borne out of a desire to control her life and her thinking, and a deep sense of frustration when you did not get your own way."
The jury had heard how the relationship between Boulton and Ms Vincent, which had begun on the Tinder dating app, had “deteriorated” by the end of March 2019 and he was eventually ordered not to contact his ex-partner.
The prosecution said “persistent” Boulton had sent Ms Vincent nearly 900 messages over the bank holiday weekend, including one which said: “You destroyed my life and have the cheek to say I ruined yours.”
The court also heard that the killer had previously told a Salvation Army support worker that he wanted to “wipe out the bloodline” of Ms Vincent’s family.
Boulton tried to claim he was on “autopilot” at the time of the murders, but jurors and the judge dismissed his defence of loss of control.
Prosecutor Katherine Goddard QC read out four victim impact statements to the court, including one from Darren’s father, Keiran Henson, who said: “Above all, the worst part is not being able to hear his voice any more.
“I will never be able to hear him shout ‘Daddy’.
“No sentence in the world will be enough for what he has done to my son and Beth.”
