I'm pretty repetitive about these two things, but for a smart person, Brimmer seems to really get his backmail scheme in the wrong order. He gives Lenore just what she wants, then threatens to take it away - which couldn't be as easy as he makes it sound - instead of blackmailing her ahead of time!

And for a smart person, Lenore doesn't seem to realize she could turn it into counter-blackmail, by THREATENING to inform on him, instead of PROMISING to inform on him. And since she's had hours to think about it, that should have occurred to her.

But those things don't ruin it for me. Especially the ending, where Robert Culp makes Brimmer seem genuinely contrite, instead of just sorry that he got caught.