Cambridgeshire killer Joanna Dennehy and one of her alleged accomplices were pictured walking hand in hand at the height of a nationwide manhunt.
In CCTV footage shown to jurors at Cambridge Crown Court, the 31-year-old and 7ft 3in Gary Stretch are seen walking casually through the Strensham service station off the M5 motorway, south of Worcester on April 2.
They later headed outside before driving to Hereford in a Vauxhall Astra.
Later that day, Dennehy randomly selected and repeatedly stabbed two strangers, Robin Bereza and John Rogers, as they walked their dogs in Hereford, the court has heard.
By that point Dennehy and Stretch were wanted by police following the discovery of the body of Kevin Lee near Peterborough the previous day.
A farmer discovered the bodies of Lucasz Slaboszewski and John Chapman in a ditch on April 3.
Dennehy, of Orton Goldhay, Peterborough, has admitted murdering Mr Slaboszewski, 31, Mr Chapman, 56, and Mr Lee, 48.
She has also admitted the attempted murders of Mr Bereza and Mr Rogers and preventing the lawful and decent burial of all three murder victims.
Stretch, real name Gary Richards, 47, of Riseholme, Orton Goldhay, Peterborough, has denied three charges of preventing the lawful burial of all three men and two counts of attempted murder.
Layton, 36, of Bifield, Orton Goldhay, has denied perverting the course of justice and two counts of preventing the lawful burial of the bodies of Mr Chapman and Mr Lee.
A third man, Robert Moore, 55, of Belvoir Way, Peterborough, has admitted assisting an offender and is also awaiting sentence.
Serial killer Joanna Dennehy took a grinning selfie photograph of herself as she searched out further victims.
The picture, shown to jurors in the trial of her two alleged accomplices, shows the 31-year-old murderer posing and sticking out her tongue in the back of a Vauxhall Astra moments before she selected and stabbed her fourth and fifth victims.
Dennehy had already killed three men in Cambridgeshire when she randomly targeted the two dog walkers in Hereford. Both men suffered multiple injuries but survived.
Two men from Peterborough accused of helping a female killer are due to stand trial.
Joanna Dennehy, 31, of Bifield, Orton Goldhay, Peterborough, pleaded guilty to murdering three men at the Old Bailey in November and is in custody awaiting sentencing.
The pleas came after the bodies of Lukasz Slaboszewski, 31, Kevin Lee, 48, and John Chapman, 56, were found dumped in ditches in Cambridgeshire in March and April last year.
Each man died from multiple stab wounds but until now little explanation of how or why Dennehy carried out the killings has been given in court.
Gary Richards, aka Gary Stretch, 47, of Riseholme, Orton Goldhay, has denied three charges of preventing the lawful burial of all three men and the attempted murders of two other men.
Leslie Layton, 37, of Bifield, Orton Goldhay, has denied perverting the course of justice.
Both will stand trial at Cambridge Crown Court.
Dennehy has also admitted "preventing the lawful and decent burial" of all three murder victims and two charges of attempting to murder two other men.