For a month old, Ryan's stallings had spent an entire weekend vomiting.

When he also developed breathing problems, his mother decided to take him to St. Louis Children's Hospital.

Somewhere along the way, the trisha stallings made the wrong turn and got lost.

It was a mistake she'll regret for the rest of her life.

The Trisha and David's stallings had been married for about a year, and had recently moved into a home

overlooking Lake Waamanoka, just outside of St. Louis, Missouri.

David was a printer, Patricia worked in a convenience store.

Four month old Ryan was their only child, and it always been sickly.

After an entire weekend of vomiting and breathing problems, Patricia decided to take the baby to St. Louis Children's Hospital.

During the trip, Patricia got lost and ended up at the emergency room of Cardinal Glenin Children's Hospital instead.

Doctors there performed tests to understand what was causing Ryan's illness.

He was listless, almost comatose, and continued to vomit.

Nurse, let's get that blood right away.

He was given a complete medical examination, including blood and urine tests.

Ryan's blood samples were sent for testing to an outside, independent lab.

The Smith-Cline Beach & Clinical Lab in St. Louis.

Gas chromatography on Ryan's blood sample found the cause of the child's illness.

It was ethylene glycol poisoning.

Ethylene glycol is a colorless, sweet tasting substance found in industrial solvents and resins.

It can be fatal in large enough doses.

Hospital officials notified both the Sheriff's Department and the Missouri Department of Family Services.

Investigators searched the stall in his home.

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