SERIAL killer Peter Tobin is cosying up behind bars with a cross-dressing paedophile.

The monster, 72, spends hours inside his cell with Kenneth Larking, 43, who now calls himself Kendra.

6 Serial killer Peter Tobin has shacked up with new 'girlfriend' Kenneth 'Kendra' Larking Credit: PA:Press Association

6 Cross-dressing paedo Larking pushes Tobin around the Edinburgh nick in his wheelchair

A source revealed the twisted pair hooked up five months ago at Edinburgh’s Saughton jail.

The insider said: “They are a match made in hell.

“They spend all their time together and like to be alone as much as possible.

They don’t like speaking to other inmates.

“Everyone says Larking is Tobin’s girlfriend.

"He has ditched the name Kenny and tells people he is now called Kendra.

6 One of Tobin's victims, Vicky Hamilton, who was just 15 when she was murdered Credit: PA:Press Association

6 Dinah McNicol was killed by Tobin in Essex Credit: Handout

6 Angelika Kluk was raped and murdered in 2006 by Tobin Credit: PA:Press Association

“He puts on mascara, eyeliner and lipstick.

"He also wears stuffed bras, dresses and long wigs.

"He has various colours and styles.

“Everyone laughs at them being together, including the screws.

"But they just ignore it and carry on.”

6 Larking and Tobin are both in Saughton's Hermiston hall, which houses sex fiends Credit: Andy Barr - The Sun Glasgow

Wheelchair-bound Tobin and Larking are caged in the tough nick’s Hermiston hall, which houses sex fiends.

The source told how evil Tobin whines about being ill and showers alone over fears he will be battered by fellow lags.

They said: “Larking pushes Tobin around in his wheelchair.

A look at the past of serial killer Peter Tobin in new documentary

"You never know whether he’s at it or not.

“He’s always moaning about feeling ill and spends a lot of time in the health centre.

"He takes a lot of prescribed painkillers which he sells to other inmates. He doesn’t take any cash so they pay him in kind.”

Tobin is serving three life sentences for murdering Vicky Hamilton, 15, Dinah McNicol, 18, and Angelika Kluk, 23.

Larking was caged for 32 months and put on the sex offenders register in 2016 for abusing a girl of 12.

The sicko slapped the terrified youngster and forced her to wash the dishes naked.

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He was freed but jailed again for fresh offences in November — then struck up his creepy relationship with Tobin.

A spokesman for the Scottish Prison Service said: “We do not comment on individual prisoners.”

Mark Williams-Thomas examines Peter Tobin car theory in case of missing teen Louise Kay in ITV's The Investigator: A British Crime Story

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