Expecting an uneventful night at the Seattle Crisis Clinic, volunteering psychology student Alan Newell is left to his own devices. Alan takes his books to study, it is quiet after all. Then a call, a woman. We learn she's called Inga (Anne Bancroft). She's drowsy. She has taken barbiturates and wants to talk while slipping away. While Alan fights to keep the woman on the line, attempts are made to trace the call.

“Do you think that not getting caught in a lie is the same as telling the truth?”

– Mark Dyson

The Slender Thread is an excellent example of picturing the invisible. The two leads never meet, both bound to their setting. The call tracing scene, a very technical affair, bears echos of Soviet Montage. The warm #jazz soundtrack by Seattle's own Quincy Jones tones down the mechanics, making the human aspect even more harrowing, almost physical.