Arthur Sinclair: [to Allison] You ignored the first rule of infidelity, darling... never cheat on a man who employs a private detective.
Garden Party Hostess: [to Allison] You must have a lot of courage, my dear... married to a mind reader? How could one keep secrets?
Arthur Sinclair: I'd give up those coffee comemrcials if I were you and concentrate on bigger things. Take it from me, those reviews of your play were unfair! Any time you need a testimonial...
Gil Weston: Shut up!
Arthur Sinclair: Watch your language, Mr. Weston. You're already in a great deal of trouble.
Arthur Sinclair: Another lesson in infidelity, darling... if a private detective can find out about Lover A, he can almost certainly find out about Lover B.
Arthur Sinclair: [to George] Allison tried to have me killed tonight.
[George stares at Allison, but says nothing]
Arthur Sinclair: Didn't you hear me? I said-...
Arthur Sinclair: I heard you, Arthur.
Arthur Sinclair: What went wrong?
Allison Sinclair: He was expecting it.
George Brubaker: [glances at Arthur, then] Impossible.
Allison Sinclair: He found out about Gil months ago. Tonight was a set-up!
Arthur Sinclair: [to telephone operator after his pacemaker test] Am I alive?