COLE COUNTY, Mo. (KTVI) — A Missouri woman accused of trying to kill her husband by poisoning his drinks was allegedly caught on camera preparing a toxic smoothie for him.

Prosecutors have charged Sarah Scheffer, 38, with two felonies: attempted first-degree murder and armed criminal action.

According to court documents obtained by Nexstar’s KTVI, the victim had been suspicious that Scheffer was putting poisonous or toxic substances in his food or beverages without his knowledge for several weeks.

The victim reported at least eight occurrences to authorities in which he recalled an odd taste and ended up with extreme fatigue, nausea, blurred vision and other symptoms dating back to December 2023, per court documents.

A drink that Scheffer allegedly prepared on New Year’s Eve heightened his suspicions after he remembered a bitter taste and some unusual symptoms the next day.

At some point after the incident, the victim reportedly set up a concealed surveillance camera in the kitchen.

The surveillance camera caught Scheffer placing several unusual ingredients into a bowl, then a blender on Jan. 16, according to the court documents. One substance that went into the smoothie was from a bag labeled “lily of the valley,” the docs said.

Police later recovered a tumbler with the smoothie after the camera discovery. Scheffer was arrested on a warrant Wednesday and admitted to adding a “lily of the valley” root to the drink, per court documents.

According to the National Capital Poison Center, all parts of the plant “lily of the valley” contain numerous cardiac glycosides, which slow down the heart and cause irregular rhythm. “Lily of the valley” is categorized as having major toxicity. It can lead to cardiac glycosides, nausea, vomiting, and abdominal pain.

Scheffer is jailed in Cole County without bond.