Tasty Mystery Baskets of Clips

No, I didn't mean "should" like you had to.
I can't remember when I've had this much fun.
It's just that J.B. labours a month or more on these mysteries...
J.B. Harland, the greatest mystery writer of all time.
You knew no one in this room was in a position to challenge you.
...from Murder Mystery Magazine to join us on our little trip.
...the poison that I thought would work the best.
...and you're trading quips.
Every passenger's face a mystery.
I bullied him to get this invitation again.
I wanted a sober proposal.
But I want it made clear that I care as much...
The whole time I was growing up, my mom told me:
Good question, Agnes. No talking, Rodney.
Shut up!
...and see if things have calmed down.
-Mr. Addison? -Someone call my name?
But I didn't do it.
J.B. and I had something...
...and that's why he kept inviting you on this train trip.
...but you gotta admit...
You know how women are.
-I've enough to worry about here. -Addison, get back here!
You found it? Where did you find it?
-You're not Agnes DiPesto? -No, I am.
He said he was going to enjoy seeing me squirm for a while.
Why?
-Yes, you did. -No, I didn't.
...and mysteries.
...didn't help you publish your books earlier.
It's okay, you guys, you've done everything you can.
...pointing it at her former beloved's brain.
I respect you, Rodney.
It doesn't make sense. Everybody knows that I love J.B.
He used you the way he used everybody in his life.
Not too shabby.
...until this dumb train stops.
Isn't all this just so much smoke to hide the guilt of your secretary?
There now, see?
I confess.
-I was up for the-- -The Magic Night Girl.
I should?
Boy, this is really exciting. Union Station.
J.B. has been very encouraging. A mentor, really.
I'm a forensic specialist.
I have an idea.
How are we gonna be able to find the murderer...
How do you suppose he came to have your perfume all over him, Janet?
Mr. Addison, Miss Hayes, I found this.
You may not have noticed...
I like you, Addison.
Drinks sipped as the train cut through the twilight.
We were researching death by injection for one of the short stories.
...a mystery served up by J.B.