A man lured a police officer into his flat before barricading the door and launching a terrifying knife attack.Former martial arts instructor Barry Hartshorn, 29, demanded to be seen by a police officer, claiming he was suffering from mental health problems.But he would only allow the officer to enter through a window at his home in Lisson Grove, Mutley.An officer had to use a ladder to gain access but as they climbed in through the window, Hartshorn pulled out a knife and began to attack the...
