Langdell claimed he was just starting a law firm on linkedin

“In this regard I note that in his report dated April 20, 2016 by Dr Philip Joseph, who is arguably the country’s most experienced consultant forensic psychiatrist in cases of this kind, expresses the opinion that you suffer from an emotionally unstable and dissocial psychopathic personality disorder with the result that the risk you pose to women is likely to remain significant for the foreseeable future.
“He is pessimistic about whether psychiatric treatment will bring any long term change and I want to make it clear that so am I.”
“Katie was a thoroughly decent and innocent young woman who had done you no harm at all.”
“You lied to her about being a lawyer with your own firm when the reality was that you had recently been made the subject of a suspended sentence of imprisonment of Bristol crown court for making death threats to women which you communicated to a community nurse involved in caring for your mental health.”

Langdell met 23-year-old Katie on the dating app Plenty of Fish.
On their first date, he took her back to the luxury Theobalds Park Hotel in Hertfordshire where he  killed her before violating her body

Langdell  described himself to a psychiatrist as a “monster”.

Langdell, admitted murdering Katie Locke in the early hours of last Christmas Eve.
Addressing the court before his sentencing he wrote: “No apology I give and no sentence I receive, not even my death, could make up for what I have mindlessly taken.”
Prosecutor Ann Evans said: “The tragedy of this case is that Katie Locke, like thousands of other young people, having agreed to a date with Carl Langdell accepted what he told her about himself.
“At the end of their first date in the early hours of 24 December last year she agreed to go back to a hotel with him, he strangled her in that hotel room and then dumped her body near a skip outside the hotel.”
Nine months earlier Langdell had told a psychiatric nurse that he wanted to cut a girl’s throat. He also admitted that he wanted to see her naked and have sex with her when she was dead.
Langdell, of Cheshunt, Herts, admitted at an earlier hearing to murdering Katie Locke in the early hours of last Christmas Eve.
Addressing the court before his sentencing the killer wrote: “No apology I give and no sentence I receive, not even my death, could make up for what I have mindlessly taken.”

Katie was unaware that Langdell was a psychia tric patient serving a suspended sentence for telling the nurse his sick fantasies.

Prosecutor Ann Evans said: “The tragedy of this case is that Katie Locke, like thousands of other young people, having agreed to a date with Carl Langdell accepted what he told her about himself. During the date, she texted another pal, Rosie Foster, who said that it was going well. Katie’s mum didn’t know about that date because Katie had given her the impression she had gone out with Rosie.
Katie and Langdell left a bar called Trafik in Old Street, Shoreditch in East London at around 1.30am on Christmas Eve.
They were driven to the hotel by taxi.

Katie went on a first date believing she was going to meet a young ‘attorney’

The court heard how during the course of the journey Langdell starting vomiting before arriving at the hotel at 3.30am.
A receptionist remembers Langdell looking “very intoxicated.”
Katie also seemed drunk, but not as much as him, and they went to their booked room.
Langdell was staggering and off balance, and Katie had to hold him up.
30 minutes later Katie called down to reception for two toothbrushes.
At 9am Langdell asked for a late check out to 2pm and paid with his debit card.
He also put a Do Not Disturb Sign on the Door.
However staff went to the room later, where they found all the bedding had gone and the window lock was broken.
They also noticed that all the towels were missing.
At midday Langdell called Diana Chertes who he had met on the dating site Tinder.
He had been dating her for a couple of months.
She had stayed with him at Theobolds Hotel.
“He told her he had killed someone. He did not give her any explanation as to why he had done it. He told her he would be in prison for a long time,” said Mrs Evans.
Mrs Evans said when Katie’s father Bill discovered his daughter was not home he went to Rosie Foster’s house and then to Langdell’s family home and saw his mother.
She rang her son, who said he had killed Katie telling her: “I am a monster.”
Her father then called the police.
When his mother called him he told her: “I wrapped her in a quilt, I put her in a trolley and took her to the grounds”
Mrs Evans said: “He went on to tell his mother that he had strangled her and it had gone too far.

The mug shot taking day after murder showing the injury to the forehead

“He had too much to drink and he didn’t want to ruin their Christmas, he was going to tell them after.”
“He claimed it was a sex game, the crown do not accept this assertion.”
Langdell was arrested near the canal in the Lea Valley Park.
He told an officer Katie’s body would be found about 10 metres from a skip in the grounds of the hotel. He would not answer police questions, but forensic analysis indicated the use of cocaine, diazepam and drugs used in the treatment of depression and anxiety.
On May 27 he finally revealed his PIN number to the police and now accepts he took pictures of Katie’s dead body which he subsequently deleted