The monitor alarm began at 3:16 in the afternoon.

By nightfall, the hospital felt different to Ethan. The brightly lit hallways that had seemed warm and safe earlier now felt full of hidden corners and quiet shadows.

Because Mark had been detained by the police for questioning regarding the forged document and obstruction of medical care, Ethan was placed under the temporary emergency guardianship of social services. An elderly, kind-faced social worker named Mrs. Gable sat with him in the pediatric waiting lounge, plying him with warm chocolate milk and crackers.

"You were very brave today, Ethan," Mrs. Gable said softly, knitting a blue wool scarf as she spoke. "Not many grown-ups would have had the courage to do what you did."

Ethan didn't feel brave. His stomach felt like it was twisted into a tight knot that wouldn't undo itself. "Can I see Mom again?"

"Dr. Bennett is running some tests right now," Mrs. Gable explained. "As soon as she’s done, we’ll go say goodnight."

What Ethan didn't know was that two floors down, in a secure administration room, Detective Miller was meeting with the hospital’s legal counsel and a representative from Laura’s insurance firm.

"Mark Parker called us three weeks ago," the insurance representative, a man named Henderson, revealed, sliding a folder across the table to Detective Miller. "He was asking very specific questions about Laura’s life insurance policy."

Miller opened the folder. "How much?"

"Two point five million dollars," Henderson said flatly. "With a double indemnity clause if the death was accidental or due to sudden organ failure. But here’s the kicker: the policy was set to expire at the end of this month. If Laura died before August 1st, Mark stood to inherit everything. If she lived past August 1st, the policy lapsed because they couldn't afford the sky-high renewal premiums."

"What about their personal finances?" Miller asked.

"Disastrous," Henderson replied. "Mark’s private investment firm went belly-up six months ago. He’s been hiding it from his wife. He drained their joint savings, took out a second mortgage on their home, and owes over three hundred thousand dollars to private lenders. Laura didn't know any of it. She thought they were completely fine."

Miller closed the folder with a heavy snap. "So he was running out of time."

Meanwhile, back in Intensive Care Unit Room 412, Dr. Bennett was personally overseeing the results of Laura’s specialized blood work. The standard hospital lab had cleared the initial screens, but Dr. Bennett had requested a comprehensive panel searching for cardiac glycosides and non-standard nerve agents.

The computer monitor flashed yellow as the results populated from the central lab.

Dr. Bennett leaned in close, her eyes widening as she read the numbers.

Digitalis toxicity.

Digitalis—a drug derived from the foxglove plant, used in carefully controlled doses to treat heart conditions. But Laura Parker had no history of heart trouble before her collapse. In high doses, digitalis caused severe confusion, extreme nausea, lethal blood pressure drops, and eventually, cardiac arrest that mirrored a natural heart attack.

"He was poisoning her," Dr. Bennett whispered to herself, a cold shock washing over her.

She immediately dialed Detective Miller.

"Detective," Bennett said as soon as the line connected. "We have the toxicology results. It’s not a natural collapse. Laura has massive concentrations of digitalis in her system. Someone was feeding it to her over the past few weeks."

"Where would he get digitalis?" Miller asked over the phone.

"Mark’s mother died three months ago of congestive heart failure," Bennett recalled suddenly, pulling up the family's medical history on her screen. "She was prescribed high-potency liquid digoxin. He had full access to her leftover medication."

"I'm securing an arrest warrant right now," Miller said, her tone icy. "Where is Mark Parker?"

"He was released from police holding an hour ago because you only had him on a misdemeanor obstruction charge," Bennett said, her heart dropping. "They couldn't hold him without physical evidence!"

"Is Ethan safe?" Miller demanded.