The three murder victims of Joanna Dennehy were all discovered in ditches earlier this year.
The body of 41 year old Kevin Lee was found in Newborough in Cambridgeshire on March 30.
The body of 31 year old Lukasz Slaboszewski was discovered in a ditch in Thorney Dyke two days later.
One the same day the body of John Chapman, who was 56, was also found in open fen land in Thorney Dyke.
Joanna Dennehy today pleaded guilty at the Old Bailey to murdering three men and to attempting to kill two others.
Her plea came as a surprise even to her own barrister.
The 30 year old, who is from Peterborough, was accused of stabbing the victims to death and dumping their bodies in ditches.
Kevin Lee, 48, Lukasz Slaboszewski, 31, and John Chapman, 56, who were found with multiple wounds between March and April.
Dennehy also pleaded guilty to the attempted murders of another two men, Robin Bereza and John Rogers.
And admitted "preventing the lawful and decent burial" of all three murder victims.
Her co-defendant, Gary Richards, has pleaded not guilty to two counts of attempted murder and three counts of preventing burial.
A woman who today pleaded guilty to murdering three men before dumping their bodies in ditches, was identified by a distinctive star tattoo.
Joanna Dennehy was caught after a manhunt during which police distributed her picture and described her tattoo.
Joanna Dennehy, 30, has pleaded guilty at the Old Bailey to the murders of three men who were found in remote ditches in Cambridgeshire with stab wounds.
A man has denied two charges of attempted murder and three of preventing burial at the Old Bailey.
Gary Richards, who is 7ft 3in (2.2 metres), is also known as Gary Stretch.
He stood alongside another defendant, Joanna Dennehy, who pleaded guilty to the charges against her.
Read: Woman admits killing three men
A woman who pleaded guilty to murdering three men has also admitted the attempted murders of two other men.
Joanna Dennehy, 30, killed Kevin Lee, 48, Lukasz Slaboszewski, 31, and John Chapman, 56. All three were found in ditches with multiple stab wounds between March and April this year.
Joanna Dennehy told the judge as she pleaded guilty to murdering three men , "I've pleaded guilty and that's that".
Dennehy also admitted "preventing the lawful and decent burial" of all three murder victims.
Her shock guilty pleas left the courtroom at the Old Bailey stunned.
The defendant's barrister, Nigel Lickley QC, said: "The course of the arraignment is not one we had anticipated."