In Seattle, police responded to nearly ten thousand scenes of people in crisis last year. And one of the only remaining paths into Washington State's largest psychiatric hospital is through jail.

But some cities are experimenting with ways to disentangle mental health care from policing — setting up new branches of emergency services that specifically handle mental illness, addiction, and homelessness. Tradeoffs recently teamed up with The Marshall Project to produce The Fifth Branch, a three- part series examining a new approach being tested in the city of Durham, North Carolina.