Sadie Hartley murder: Katrina Walsh planned to use Isis flag in killing of Sarah Williams' love rival to mislead police

'Wow, I may get to be instrumental in helping remove the awful woman! Was so buzzing so much I needed a Southern Comfort to wind down a bit,' killer's diary says

Sadie Hartley with her partner Ian Johnston (PA)

The diary of Katrina Walsh is an "extraordinarily revealing document" chronicling the plot to kill Sadie Hartley.

Seized by detectives it showed how the pair - who have both been convicted of murder - talked over and planned the "assassination" of their 60-year-old victim in cold-blooded detail.

In one entry, 17 months before the crime, Walsh wrote: "Sarah came round so got caught up in endless murder plots for Ian's other half."

And in June last year she wrote: "Seriously talking of getting rid of her opponent... she does seem to be a totally evil bitch."

Two months later, Williams attempted to recruit Walsh's ex-husband Kevin to her cause and use his "skill set".

Walsh wrote: "Wow, I may get to be instrumental in helping remove the awful woman! This may happen. Wow! Am unexpectedly excited by it. Was so buzzing so much I needed a Southern Comfort to wind down a bit."

But after her ex declined to get involved she notes: "Plan B will be needed..."

In September 2015, Walsh refers in her diary to thoughts of "a hit" on a motorcycle.

She also wrote of using an Isis flag "to mislead the investigation too, I'm much more into that".

In December 2015, the pair took a ferry from Hull to Rotterdam and then to Darmstadt, Germany, where they bought the stun gun.

Walsh wrote: "I said no matter what her way of testing the bitch, then she could do with that zapper or she risks being injured herself.

"So will get a trip to Germany out of this. Took ages to wind down, all the excitement of plotting the perfect murder!"

Walsh wrote she did not want to be involved in the "sharp end" of the actual killing but was happy to get a trip abroad to help the plot.

Detectives said another entry perfectly summed up Walsh: "I have no moral qualms, just a serious don't let us get caught twinge."

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