Who is the dating site murderer
Stephan begged her to end the relationship after hearing that Hawke used to "push his sister around."But Sharon told her brother that she was "just desperate to be loved" and stopped speaking to him shortly after.
"She continued her relationship with that monster," her devastated brother said.
Langdell met Katie, a teacher, through the online dating site Plenty of Fish. After spending the evening in London, the pair went back to the Theobalds Hotel in Cheshunt, Waltham Cross.
"That animal preyed on her caring nature."I still can't believe someone would want to hurt my poor, defenceless sister in such a horrific manner," he added.
Carl Langdell, 26, murdered history teacher Katie Locke, 23, in a hotel room just two weeks after they first met on internet dating site Plenty of Fish.
He then inserted an object into her anus after she had been killed.
Just three days later, on July 13, 2014, police found her dead in her flat in Liverpool.
And now Stephan, from Wirral, Merseyside, is determined that his sister's death will not in vain.