The men held on D block, the high security wing of Cook County Jail, knew the early morning raid was coming the way inmates often sense these things. Corrections officers moved through the wing as the BBC’s Quentin Sommerville watched, checking every scrap of paper they could find. It was not a formality. In this jail, paper itself has become the problem.
Cook County is Chicago’s largest jail, and the largest single use jail in the United States. For the people who live and work inside it, 2023 was a year that changed how everyone thought about danger. The facility, which in an ordinary year loses one or two inmates to overdoses, lost eight that year to fatal seizures. Security footage reviewed by the authorities shows prisoners spasming and collapsing, images that have shaped how officers now approach their daily work.
For years, the jail’s defences were built around a known threat. Traditional drugs were usually smuggled in hidden inside body cavities, so the facility installed the same body scanners travellers pass through at airports, a measure designed to stop that route. What no one had planned for was a different way in. Investigators uncovered drugs being mailed directly into the jail, soaked into the paper of book pages and letters. A page that looks ordinary can carry a dose powerful enough to kill, which is why officers now treat every letter and every book page as something to be examined rather than simply handed over.
To understand the scale of the challenge facing the jail, the BBC spoke with a former inmate and dealer. He explained how synthetic drugs can be made inside the United States using household ingredients, a detail with consequences far beyond one facility in Chicago. If these substances can be produced domestically from everyday materials, it could change the demand for drugs brought in from outside the country, reshaping a trade that authorities have long tried to interrupt at its points of entry.
For the corrections officers who joined the raid on D block, the shift in how drugs arrive has changed the texture of their work. A search that once focused on people and concealment now extends to the mail itself, to the pages of books and the letters that families send in. Every scrap of paper is checked, because the stakes are measured in lives: eight men lost in a single year, in a jail that once counted such deaths in ones and twos.
The spike in overdose deaths in 2023 turned what had been a persistent but manageable risk into an emergency for the people inside the walls, both those held there and those employed to guard them. The footage of inmates spasming and collapsing is a record of what happens when synthetic drugs reach a cell block, and it is the reason the early morning raids continue.
The former inmate’s account points to why the problem is unlikely to fade. Synthetic drugs made from household ingredients do not depend on long supply chains that can be cut off at the border. They can be produced close to home, cheaply, and in forms that can be soaked into paper and posted through the mail. For a jail that has already invested in airport style body scanners to counter one smuggling method, the arrival of another has meant adapting again, page by page and letter by letter.
For now, the response at Cook County remains what it was on the morning the BBC observed: officers moving through D block, checking everything, in a facility where the most dangerous contraband may look like nothing more than an ordinary piece of paper.