My own eclectic notes below are based on listening to 82 episodes of the series and on looking at the twelve scripts available in the library of the Society to Preserve and Encourage Radio Drama, Variety And Comedy (SPERDVAC).
Some story connections
1950-05-27 audition "The Anita Cameron Case" (Morton Fine & David Friedkin)
1950-08-03 Untitled (aka Two Young Girls Killed by Hit and Run Driver) (Morton Fine & David Friedkin)
1950-08-10 Untitled aka Man Dies of Poisoning (Morton Fine & David Friedkin)
1950-08-24 Untitled (Hotel arson, body found) (Morton Fine & David Friedkin)
1950-11-23 The Topaz Earring Case (Gene Levitt and Robert Mitchell)
1950-11-30 The Cop Killer (Blake Edwards)
1950-12-07 The Jersey Parallel (Blake Edwards)
1951-06-19 Lieutenant Guthrie Kidnapped (Blake Edwards)
1951-09-26 The Fur Flaunting Floozie (E. Jack Neuman)
1951-10-18 The Nicely Nixed Nixon Case (E. Jack Neuman)
1951-11-08 The Pixie-Picker Pickle Case (E. Jack Neuman)
1952-10-08 The Teacher's Pet (Sidney Marshall)
1952-10-22 The Green Cap Case (Sidney Marshall)
The name of the victim in "The Green Cap Case" is William Brenizer; Eugene Brenizer was one of the detectives on the Bohanak case.
1953-01-07 Once Upon a Snow-Plow (Sidney Marshall)
1953-02-11 Good Enough to Eat (Sidney Marshall)
Some character names (or, The Quine's Qurious Qognomens Qase)
Child actor turned director Richard Quine (Wikipedia) was a friend and frequent collaborator of Blake Edwards, and is credited as co-writer or co-editor with Edwards of the Line-Up episodes of 1951-05-29, 1951-06-12, 1951-07-05, and 1951-08-02. He and William Asher (Wikipedia) were co-producers and co-directors of the 1948 Columbia picture Leather Gloves, in which Blake Edwards was an actor.
The fictional Sgt. Quine is called "Dick" and "Richard" in the dialogue of 1951-09-05 "Pointless Pierson Polemic Polarity," and has the first name Richard on the character list of the script for 1952-04-08 "Cornered Cop Killer." His first name is Tom in the dialogue of 1952-10-01 "Poker Party" and on the scripts of 1952-04-01 "Kastro's," 1952-07-06 "Luger-Lugging Laddie," 1952-07-22 "Drinkler Kidnapping," 1952-11-05 "Be-Bop Bandits," 1952-12-12 "Gasoline Bandit," and 1952-12-19 "Two Tough Thugs."
Sgt. Asher has the first name Dave in the dialogue of 1952-03-04 "Mercer's," 1952-05-06 "Babs," 1952-07-08 "Luger-Lugging," 1952-07-29 "Charles Crocked," 1952-08-05 "Karger Kops," 1952-10-15 "Bentley's" and 1952-12-19 "Two Tough Thugs," and on the script of 1952-12-12 "Gasoline Bandit." His first name is Fred on the scripts of 1952-04-01 "Kastro's" and 1952-11-05 "Be-Bop."
According to IMDb, Asher's first name was Fred in both the 1954 TV series and the 1958 movie based on The Line-Up. Quine is listed in only one episode of the TV series, with no first name given, and has the first name Al in the movie.
Before introducing Quine as a regular on The Line-Up, Blake Edwards had used the name Quine for a police officer in Richard Diamond, Private Detective 1949-05-22 "The Stolen Purse"; and Sgt. Asher shares his surname with Diamond's steady girlfriend Helen Asher. In a possible nod to her, one of the suspect's aliases in 1951-10-04 "The Wild, Wild Woman Case" by E. Jack Neuman is "Helen Diamond."
The real-life Dick Quine was also close friends with one Frederick Karger, and witnessed Karger's marriage to Jane Wyman in 1952. A policeman named Karger is referred to in passing in nine episodes in 1951 (1951-04-24, 06-19, 09-26, 10-04, 10-11, 11-01, 11-08, 11-22 and 11-29), but does not appear as a character.
1951-12-06 "The Bastille-Bound Bad Boys Case" has a Sgt. John Karger: "Karger's taking the line while Matt is sick, he's nervous as a kitten." John Karger has very little dialogue in this episode after the line-up scene, but Quine is present throughout—and at one point seems to refer to Ben as his partner, leading me to believe that this Karger really was introduced solely to fill in for an unexpectedly absent Matt Greb/Wally Maher, and the script was hastily reworked to give Quine most of Matt's other dialogue (probably relegating Quine's original dialogue to Karger).
Pete Karger is Ben Guthrie's full-time sidekick beginning in early 1952 after Maher's untimely death. Asher and Ben's dialogue at the beginning of 1952-02-05 "The Potting Peter Case" again indicates that Karger is new to doing the line-up ("Got somebody in the line?" "Uh-uh. I thought I'd see how Karger was making out. How many do you have?" "Fifteen. Glad to see Karger get the chance. Been with you a long time." "Yeah, twelve years now."), so there's no apparent continuity between him and the earlier version of the Karger character. Karger spells his name aloud in 1952-10-08 "The Teacher's Pet": "This is Sergeant Karger." "Carter?" "Er, Karger. K-A-R-G-E-R."
In 1950-07-20, the first prisoner in the line-up is named John Meston, like the radio writer who later became script supervisor for Gunsmoke. Fine and Friedkin also used the surname Meston in four episodes of Broadway's My Beat and one episode of Bold Venture.
1951-02-01 "The Grocery Store Matter" by Blake Edwards has a character named George Lumpkin; Ernest Lumpkin was Helen Asher's grouchy neighbor on Richard Diamond.
1952-04-01 "Kastro's" mentions a cop named Leeds who gets shot and dies! Peter Leeds does play Asher in this episode, but at least he doesn't have to report his own death.
Joke names and a name joke
The first page of the script for 1951-10-04 "The Wild, Wild Woman Case" by E. Jack Neuman lists the two supporting sergeants as "Sgt. Nohitt Asher" and "Sgt. Cap Quine," which is presumably a joke: in this and other episodes, the cast lists sometimes give characters humorous names in addition to the names that are heard in the script proper.
"Wild, Wild Woman" also gives a superfluous middle name to Foley Lapin O'Mahoney, and a superfluous surname to Pete Peters. 1952-11-05 "The Be-Bop Bandits Bungling Bang-Bang" by William J. Ratcliff lists the character Miss Raines as "Miss Seldom Raines." 1952-04-01 "Kastro's Kop Killing Karnage Kase" by Blake Edwards lists the character Santley as "Notalent Santley"—and lists his actor as "Raymond N. T. Burr"!!
In 1951-02-01 and 1952-04-08, both by Blake Edwards, Quine's first line of dialogue in the script is "Hy, Ben," with a Y—presumably because in both episodes Quine is played as usual by Hy Averback. (In five of these other scripts, including 1952-11-12 by Blake Edwards and with Hy Averback, Quine says hi with an I.)
The prisoners are sent where?
The spiel explaining the line-up in the first scene of each episode has some minor variations throughout the series: the order of the sentences, which sentences are included, whether or not the sergeant adds "All right" or "Okay" before "bring on the line," whether the audience is on the other side of "the wire" or "the screen"....
My favorite of these variations is that in all surviving episodes up through 1951-02-22, Greb says, "Please be prompt with your questions or identifications. When the prisoners leave here they are sent to the bathroom and dressed back into their jail clothes. It makes it quite difficult to bring them back after they leave here."
Then, starting on 1951-02-27, he says, "Please be prompt with your questions or identifications. When the prisoners leave here they are sent to the washroom and dressed back into their jail clothes. It makes it quite difficult to bring them back after they leave here."
Did somebody decide the word bathroom was too vulgar for the radio? Were you allowed to say bathroom on Thursday night, but not on Tuesday night?
On 1951-05-01, Greb's spiel omits this sentence entirely ("...If you're sure or not too sure of the suspect, have him held. The officers who took your name will assist you, they're seated among you. The questions I ask these suspects..."), and subsequent episodes either have washroom or neither word.
1953-01-02 "Cowardly Castro" and 1953-01-07 "Once Upon a Snow-Plow" both omit the bathroom/washroom line from Karger's spiel—but there are surviving dialogue-only recordings of both, and in both cases we do hear the line at the end, where the spiel would normally be covered by the rising theme music. The "Snow-Plow" script in the SPERDVAC library says bathroom, but the recording says washroom; the dialogue in this script is not identical with the dialogue in the recording, and this may have been among the changes yet to be made.
Or, perhaps Jack Moyles simply knew that he wasn't supposed to say bathroom! In "Castro," presumably recorded about a week before "Snow-Plow," he says, "...When the prisoners leave here they're sent to the bathroom— When the prisoners leave here they're sent to the washroom and dressed back into their jail clothes. It makes it quite difficult to bring them back after they leave here." Then he starts over and repeats the whole speech, ending with "...sent to the washroom and dressed back into their jail clothes. It makes it quite difficult to bring them back after they leave here."
Miscellaneous
Lieutenant Guthrie has a cold in 1951-01-18 (and 1952-05-13) "Yudo in Ypsilanti," 1952-02-29 "The Sobbing Singer Saga," and 1953-01-07 "Once Upon a Snow-Plow." Three or four colds in two and a half years is better than average for a real person, but must be a record for a weekly detective show protagonist! Interestingly, in the "Snow-Plow" script I've seen, Guthrie does not have a cold—but it's mentioned in the dialogue in four places, so it clearly wasn't just a case of "throw it in." And actually, I think Guthrie's cold is more essential to this story than to either of the other two: it contributes to the overall mood of the episode, underscoring both the harsh winter weather and his anxiety about anticipating additional murders.
In 1951-11-29 "The Railroad Roundhouse Roundup," prisoner number 1, Jules Simpson (Howard McNear), says he's had lots of jobs and made enough to get a Social Security number. The number he gives is Blake Edwards's actual Social Security number! (This was back in the day when one's Social Security number really was just for keeping track of Social Security payments, rather than being the super-top-secret key to one's whole identity.)

