Two police officers pushed through the front door with their flashlights drew and ready.
They quickly secured the scene, placing heavy steel handcuffs onto Sarah's shaking wrists.
Sarah screamed and protested loudly as she was led out to the marked police cruiser outside.
Sarah: I am innocent! My husband is making up crazy stories to ruin me!
The lead officer stepped into the dining room to inspect the damaged marble floor carefully.
He knelt down near the dark green stain, taking official photos of the shattered glass pieces.
Officer Miller: Whatever was in that cup is extremely dangerous and toxic, sir.
Mark: My daughter saw her mix it upstairs before bringing the tray down to me.
Officer Miller called for a forensic team to test the remaining residue on the floor immediately.
Within an hour, detectives arrived at the house to search the entire master bedroom and study.
Mark sat on the porch step with Lily, wrapping a warm blanket around her small shoulders.
Detective Davis walked out of the house holding a small glass bottle inside a clear plastic bag.
Detective Davis: We found this hidden inside a hollowed book in your wife's home office.
Mark looked at the small bottle, which contained a tiny amount of bright green liquid residue.
Mark: What is it, Detective? Where did she even get something like that?
Detective Davis: It is an industrial cleaning chemical used only in specialized commercial manufacturing plants.
The detective sat down next to Mark on the step, his face looking very serious and calm.
Detective Davis: We also found recent financial documents inside her locked desk drawer, Mr. Vance.
Mark: What kind of financial documents? We share a joint checking account together.
Detective Davis: She took out a two-million-dollar life insurance policy on you three months ago.
Mark felt a cold knot tighten violently inside his stomach as the horrific truth hit him.
Sarah had not just snapped today; she had been planning his murder for several months.
She wanted his entire estate, the family home, and the massive life insurance payout for herself.
Mark: She was going to kill me and take everything I worked so hard for.
Lily: Is Sarah going away for a long time now, Daddy?
Mark pulled his daughter close, kissing the top of her soft head with deep emotional relief.
Mark: Yes, sweetie, she is never going to hurt us ever again.