Ed Morgan
From Tardis Wiki, the free Doctor Who reference
Ed Morgan lived in Wales. He raped and murdered 17-year-old Lizzie Lewis on March 28, 1963.
He was blackmailed by Bernie Harris, who had witnessed the murder using a quantum transducer. He tried to kill Bernie, but Gwen, Owen and Jack stopped him. Moments later Owen tried to kill Ed, but was stopped by Gwen.
Ed then went to Gwen trying to hug her not noticing she has got the knife. He walks into the knife, stabbing him and he loses consciousness. Unable to revive him, Gwen realises she killed him by accident. (TW: Ghost Machine)
