In the fight scene toward the end, it's obvious that a stunt double is subbing for the Bayless character as he doesn't look anything like actor Dan Dailey.
Ness: Where do you work?
Chavis: I'm too old to work.
Chavis: That is not our son.
Ness: If he's not your son, Mr. Chavis, why is your wife crying?
Rossman: Seems like the lock on a bank vault.
Ness: Can you figure it out while we check the outside?
Rossman: I'll figure out the U.S. Mint by then.
Ness: (about the wiretap) How's it coming?
Youngfellow: We'll be able to hear his heartbeat if he has a heart.
Rossman: We checked every foot of that basement.
Ness: We should have checked the inches.
Bayliss: There are a hundred ways to kill you, Mr. Ness.
Narrator: Rossman could open everything but the Pearly Gates.
Rico: (growing weary of listening to classical music on the wiretap) What's he have against Paul Whiteman?
Youngfellow: (about the statue) I could bug the base.
Ness: It's a Dying Gaul.
Ness: So, go bug a doorknob.
Come and Kill Me is the only Untouchables episode that was written by a female--Kitty Buhler.