This case makes me think a bit of Jodi Arias.

A teacher in the U.K. stabbed her partner and buried him in the backyard after deciding he had cheated on her, prosecutors told a court this week.

"The police recovered a notebook from the place where she had been renting that detailed a chilling account of how she had planned and killed someone, but it did not contain the name of the person she had killed," prosecutor Steven Perian told the Northampton court as the trial commenced on Monday.

Fiona Beal, 49, denied killing her partner, Nicholas Billingham, 42, who allegedly had a history of cheating and was "cruel" to her. Prosecutors countered Beal's claims by reading from her diary, in which she appeared to confess to the crime and detailed how she carried out the murder.