'Formulated a plan to kill': Husband waits for scientist wife to come into another room where he repeatedly stabs her with kitchen knife, cops say

Left: James Martin (Johnson County Jail). Right: Amber Martin (Amber Martin/Facebook).

Fresh insights have surfaced regarding an Iowa man accused of devising and executing a plot to murder his spouse.

James Martin, aged 47, faces a first-degree murder charge for the alleged killing of his 41-year-old wife, Amber Martin. He has been held at the Johnson County Jail since January, with bail set at $1 million.

On January 16, in the 2800 block of Spring Rose Circle in Coralville, Iowa, James Martin is accused of orchestrating a plan to take his wife’s life.

“In the hours preceding the tragic incident, the accused developed a scheme to end the victim’s life,” detectives detailed in a criminal complaint acquired by Law&Crime. “He armed himself with a kitchen knife, ambushed the victim as she left another room, and inflicted multiple stab wounds.”

Officers responded to the Coralville apartment, located in eastern Iowa, at approximately 6:40 a.m. following reports of a stabbing. Upon arrival, they discovered Amber Martin with numerous stab injuries, and she was declared deceased on the scene.

This week, law enforcement officials divulged further information, notably that James Martin’s mother allegedly witnessed the distressing assault.

According to Cedar Rapids-based ABC affiliate KCRG, the mother told officers that she arrived at the apartment around 1:00 a.m. that morning due to her son’s mental health “spiraling.” She said she fell asleep on the couch but woke up to noises from the laundry room.

She reportedly thought it was the couple’s cat, but then heard the words, “help, help me.” She approached, and though there was no light on, she allegedly could see her son stabbing her daughter-in-law.

The mother is said to have rushed into the room and “begged” James Martin to stop. When he did, she could not find her phone and asked him to call the police.

Officers said that when they entered the home, they found a a bloody knife in the kitchen sink as well as smears of blood and bloody clothing in the home. James Martin admitted to killing his wife, the complaint stated.

The suspect was arrested, and investigators sought to uncover a motive.

They say James Martin told them he stabbed his wife to “put her out of her misery,” per KCRG. He reportedly believed they were in financial trouble that they could not come back from.

Amber Martin worked as a medical laboratory scientist supervisor for the University of Iowa Health Care system. Her boss, Connie Floerchinger, told Muddy River News that they were “shocked and horrified” by her death, adding that she was “sweet, smart and had an amazing personality.”

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