Slain Woman Helped Plan Family's Murder | Couple Die 12 Hours Apart

ILLINOIS — On the weekend, we present a week in review of the top stories and headlines from all across Illinois. Here's a roundup of some of the most-read stories across the state. You can also find your local Patch and catch up on those stories by clicking here.

Quadruple Murder: Victim, Suspect Had Relationship: Cops

Police believe a woman — who was named a person of interest and had a relationship with the suspect in the slaying of a couple and their two young sons — was involved in planning the quadruple slaying and drove the vehicle to the crime scene. The family and their three pet dogs were all found killed.

Couple Married 51 Years Die 12 Hours Apart

"We are all of the mindset that she took comfort knowing that she wasn't going to be leaving him behind," their son said.

Iconic Route 6 Attraction, Restaurant: Museum Would Buy It, But Only At This Price

The Route 6 landmark is listed for $1.4 million — and a local history museum would purchase it, but at a much lower price.

Man Frustrated, Baffled After Vandals Damage Light Display

"I don’t think these kids understand the gravity of what they did. They could have burned my entire home down. It could have turned into a major catastrophe."

USA Today Ranks 'Illumination: Tree Lights' Among Top 10 Displays

The dazzling light show ranked higher than displays in California, Florida and Arkansas.

Billy Corgan To Co-Host New Year's Eve TV Broadcast From Illinois Suburb

The Smashing Pumpkins singer and his wife, Chloe Mendel, will be joined by some of the Chicago area's top jazz musicians for a Prohibition-inspired party on NBC.