Who is serial killer Joanna Dennehy?

Psychopathic serial killer Joanna Dennehy is serving a whole life sentence for murdering three men before randomly selecting and attempting to kill two others. But who is she and how did the Home Counties schoolgirl become a cold-blooded killer? Who is Joanna Dennehy? Joanna Dennehy Credit: AP Photo/ Cambridgeshire Police Dennehy murdered Lukasz Slaboszewski, Kevin Lee and John Chapman in and around Peterborough over a 10-day period in March 2013.  Police launched a