in an alarming visit by an unidentified stranger. i've established the mystery man didn't work for the police. he was, in fact, an mi5 officer. the counter—terror investigation ended with mi5 being passed the evidence on their man. it was a highly unusual move by mi5 suggesting interference in a criminal inquiry. police have since refused to investigate his treatment of beth. counter—terror police say no criminality was identified during their inquiries, but have apologised for the fact beth's possessions were not passed directly to her. we've examined his alarming personal behaviour in the uk, which will have been visible to the authorities. the agentjoined a dating site looking for women under an extremist