I had never heard of this movie before, and I'm glad I checked it out. As a native New Yorker, I love seeing the location shots from the early 60's around East Harlem, Central Park and other places. Some changes since then, but some things are the same.
The same can be said for the theme of the movie, the sad reality of drug addiction. Some things never change, though opioids are now the fashion, rather than main lining heroine. Either way, it's just as pathetic.
Both Steve Lansing and Douglas Rogers do good acting jobs as police officers who go after the pusher that's supplying young people, including Laura (Kathy Carlyle), the daughter of one and fiancée of the other.
Ms. Carlyle gives a powerful performance as she goes through the stages of withdrawal, you really feel her suffering, as she's desperate for another fix of what she started taking as "headache medicine", or so she was told.
Felice Orlando is another good actor, as the evil but charming pusher, and Sara Ammon is also very good as Maria, the nightclub dancer/junkie who falls under his spell and helps cause her kid brother's death.
There are some exciting scenes involving Lansing and Rogers, who go after Orlando, risking their lives more than once.
As so often happens, there are familiar faces from TV: John Astin (in his first film role, pre "Addams Family') and David Ford, who fans of "Dark Shadows" will recognize as Sam Evans.
Worth watching.