A woman (Joan Hackett) elicits help from a lawyer (Kevin McCarthy) after receiving threatening phone calls from a woman (Kathleen Nolan).
Quite an psychologically interesting episode, with an ending I did not see coming. The last few minutes were rather bizarre, which was a nice change of pace.
I recognized Kevin McCarthy, but the two women I was unfamiliar with.
He was Prof. Walter Jameson / Tom Bowen / Maj. Hugh Skelton in The Twilight Zone episode "Long Live Walter Jameson".
He has also appeared in such MeTV shows as Cannon ("The Deadly Trail"), Mission: Impossible ("Invasion"), The Invaders ("The Watchers"), The Fugitive ("Wife Killer"), and over a hundred films.
there doesn't seem to be anything here