As of July 2026, Medical Investigation Season 1 aired in 2004 with 20 episodes. Full episode guide and where to watch below.

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Medical Investigation Season 1

2004 20 Episodes Drama · Mystery ⭐ 7/10

Medical Investigation Season 1 is currently streaming on major platforms, and its case-by-case structure never gets in the way of the bigger story. Across 1 season, the show has had time to find its rhythm and keep it. 17 viewers have already rated it on TMDB — the kind of consensus that does not happen by accident. Watch Neal McDonough work — the performance is a masterclass in restraint. Available now — press play and find out why people keep recommending it.

Part of the current wave of titles people are actually watching, Medical Investigation Season 1 earns its spot. The plotting gives Medical Investigation Season 1 its backbone, but it is the characters you come back for. Season 1 of Medical Investigation includes 20 episodes. It aired from September 2004 to March 2005. This season stars Neal McDonough, Kelli Williams and Christopher Gorham. Neal McDonough and Kelli Williams lead a cast that brings real weight to the material. It was aired in 2004. Medical Investigation Season 1 is at its best in the quiet scenes between the plot beats, where the character work actually happens. It delivers reliably on what it promises, which is more than most of its competition manages.

Crime and mystery fans will find exactly what they are after in Medical Investigation Season 1. It stands on its own even without an obvious comparison point. The complete run is available and best experienced without too much prior knowledge of where it goes. Neal McDonough's performance is the kind that shows up on best-of lists years later. If you have been looking for something to fill the gap left by a recently finished story, this is a reliable answer.

📡 Where to Watch Medical Investigation Season 1

Not currently available on major streaming platforms. Check back soon.

🎬 Medical Investigation Season 1 — Episode Guide

You're Not Alone

When people in New York City start turning the color blue, the NIH team is called upon to help cure this outbreak. When searching for the cause, a diner holds an important clue.

A group of four teenage girls are suspected of having an STD when they are hospitalized for seizures. However, the NIH team must uncover the true cause of the seizures, and a pair of pants holds a clue.

When a couple of Iraqi War vets start showing signs of Gulf War Syndrome, the NIH team is called to investigate. However, when a group of Nursing-home residents fall ill with the same symptoms, the NIH team is left baffled. However, they are missing the bigger picture, where a lector holds an import...

When the vacationers in a Bahama resort start falling ill, the NIH team is called in to discover the cause of this devastating illness. The only problem is that this disease is not effecting the children. However, when the first child falls ill with the same symptoms, the common link is found, and a...

After years of watching young children fall prey to a crippling muscular ailment, a small community summons the NIH team to hopefully find a cure. At first, Connor suspects a local chemical plant as being the cause of this devestating. However, a common link is discovered, and the DNA of the childre...

When the jocks of a Midwestern College start falling prey to a crippling disease, the NIH team is summoned to investigate. At first, the suspected agent is Multiple Sclerosis. However, when the coach, as well as some sorority pledges fall ill with similar symptoms, the NIH team is baffled. As it tur...

The team flies to Philadelphia to figure out if Anthrax is showing up as a result of terrorism or not.

The team flies to a small Virgina town to figure out why people are dying from a deadly strain of the flu.

After the victims of a car accident are diagnosed with a deadly disease, which caused the accident, a small Maryland town requests the assistance of the NIH team. The only problem is there is only one living victim, as the other nine victims had perished, and in order to save her life, and find the ...

Price of Pleasure

When the adult film stars in Los Angeles start falling prey to a devastating disease, the hospital summons the assistance of the NIH team. At first, being as they are adult film stars, Connor suspects an STD. However, when the perfect housewife also falls prey to the same illness, a new link is need...

An ""Angel of Death"" runs amok in a hospital, spreading a deadly flesh eating virus, which kills patients. Now it is up to the NIH to stop this lunatic, who has a past that they should not be proud of.

A surfer and volleyball player from a seaside town catch a mysterious disease. Dr. Connor and his staff begin suspecting that nearby seals played a part in this illness, however are the other forces at play?

A smallpox outbreak sends the NIH team to Montana. However, is this once thought to have been eradicated disease caused by terrorism, or is it natural?

The team is trapped in a snowstorm in the arctic while trying to figure what is causing pneumonia in patients that also causes psychosis. To make matters worse, one of their own goes down with the same illness.

The team travels to Baltimore to help stop an outbreak of the plague, a disease that wiped out much of Europe in the middle ages. But they uncover a string of dirty cops, who were trying to cover up a murder, in the process.

Split cases find Connor, Natalie, and Powell in New York City trying to cure victims who are presenting paralysis as a result of the September 11 Terrorist Attacks, and Miles and Eva down south trying to figure out what is causing the pregnant wives of military men to miscarry.

The NIH team teams up with the officers of the 55th Precinct in New York City to try to figure out what is the source of an outbreak of Marburg, a deadly disease with no known cure. They also try to locate patient zero, a murder suspect on the run, who is helping to spread the disease throughout New...

Connor suspects terrorism when two congressmen and an officer fall prey to an unknown disease. However, when the leader of a prostitution ring becomes ill with the same symptoms, an unknown STD becomes the suspected agent. Now it is a race against the clock, and their pesky boss, Dr. Ewing, to find ...

Mission La Roca (1)

Connor and Powell must travel to a small Mexican town after an earthquake strikes, trapping Natalie, Eva, and Miles. Only when they go after Miles, who was trapped in the church Mission La Roca, they are captured by insurgents.

Mission La Roca (2)

The team figures out that they are dealing with bacterial meningitis, and the only thing that makes their day worse is a corrupt politician who steals the medicine and holds it at ransom. Elsewhere, the people at Mission La Roca (Miles, Connor, Powell, Nestor, Juan, Kris, and Baracas) make it out be...

🎭 Cast of Medical Investigation Season 1

Neal McDonough

Kelli Williams

Christopher Gorham

Christopher Gorham

Anna Belknap

Troy Winbush

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