Serial killer Joanna Dennehy took a grinning 'selfie' as she sought further victims.
The picture, shown to jurors in the trial of her two alleged accomplices, shows the 31-year-old murderer sticking out her tongue moments before she stabbed her fourth and fifth victims.
Dennehy had already killed three men when she randomly targeted the two dog walkers. Both men survived the attacks.
Mark Lloyd, who was in the same car as Dennehy and her alleged accomplice Gary Stretch, told Cambridge Crown Court that Dennehy was driven by a thirst for blood.
An appeal had been issued to trace Dennehy and Mr Stretch following the murders of Lukasz Slaboszewski (31), John Chapman (56), and Kevin Lee (48) last year.
Dennehy, of Orton Goldhay, Peterborough, has admitted murder.
Stretch, real name Gary Richards (47), denies three charges of preventing lawful burial and two counts of attempted murder.
Mr Layton (36), of Bifield, Orton Goldhay, denies perverting the course of justice and two counts of preventing the lawful burial. A third man, Robert Moore, admitted assisting an offender and is awaiting sentence.