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A Willoughby Hills man and his foster daughter are accused in the murder of his wife.

(PD file)

WILLOUGHBY HILLS, Ohio -- A Willoughby Hills man was arrested Friday for plotting the death of his wife last year. His co-conspirator: a foster daughter, with whom he had an affair, according to court records.

Kevin Knoefel was indicted on Thursday by a Lake County Grand Jury for three counts of complicity to aggravated murder, two counts of conspiracy to commit aggravated murder and six counts of sexual battery.

His wife, Lisa Knoefel, was found stabbed to death in their Chagrin Drive home early on Nov. 16. Her foster daughter, Sabrina Zunich, 18, was quickly arrested after police reports said she was found in the home covered with blood and carrying a large knife.

The Lake County prosecutor's office said she remains in jail on $750,000 bond. Her case has not been presented to a grand jury.

According to the indictment, Kevin Knoefel, 43, began talking with Zunich last August about killing Lisa. The indictment said the plan centered on killing the woman in her sleep. It said Knoefel told Zunich what kind of knife to employ and how to use it. The indictment said the truck driver told Zunich to rummage around his wife's jewelry to make it look like a burglary, but also to hack her own legs to make it look like she killed Lisa in self-defense.

The indictment said Knoefel told Zunich that his wife was worth more dead than alive. Lisa Knoefel was 41.

Knoefel is expected to be arraigned on Monday, said a statement from the Lake County prosecutor's office. It said the investigation was conducted by Willoughby Hills police. It did not say why police suspected Knoefel was involved in a plot.

The indictment said Knoefel began having sexual relations with Zunich in March, 2012, when she was 17 years old.