Take a train ride this week in CT and you will have a chance to travel in style. Here’s how.

The holidays trains are still running, at least through Friday, and the travel themes are shifting from holiday cheer to a 1952 Hitchcock movie and 1920s gangsters.

Connecticut’s train and trolley museums are rolling out their final special holiday excursions before most of them shut down for the winter.

Essex Steam Train’s “North Pole Express” trips ended Dec. 23, but one of the state’s top train-related tourist attractions is hosting one more big event this year: a “Roaring Twenties New Year’s Gala” Dec. 31 at Essex Station with dining on a train car, cocktails, a “1920s Mafia marriage murder mystery” game/performance, dancing and a champagne toast to 2023. The evening lasts from 6:30 p.m. until 12:30 a.m. on New Year’s Day and costs $279 per person. essexsteamtrain.com.

Another train event that veers off in a wilder, darker direction (following months of Santa-styled North Pole trains or other holiday themes) is the “North by Northwest” excursion offered on Dec. 30 by the Naugatuck Railroad in conjunction with the Warner Theatre and Salt 2.0.

The railroad is highlighting an observation car from the historic 20th Century Limited line, which brought passengers from New York to Chicago in style, from 1902 to 1967. The event features a train ride from Thomaston to Torrington, dinner at the Salt 2.0 restaurant and a screening of “North by Northwest” at the Warner Theatre.

The 20th Century Limited has been celebrated in pop culture well beyond Hitchcock’s “North by Northwest,” most notably as the location of the romantic comedy “The 20th Century,” a 1932 play that was later turned into a movie and a Broadway musical.

In “North by Northwest,” Roger Thornhill evades the police (who are pursuing him for an assortment of crimes he didn’t commit) by boarding the 20th Century, where he meets his love interest for the rest of the movie, Eve Kendall (Eva Marie Saint).

The Naugatuck Railroad is billing the “North by Northwest” excursion as “a one-of-a-kind experience centered around a historic observation car from the 20th Century Limited, pairing an excursion with a screening of a classic Alfred Hitchock film that prominently features the luxurious train.” The railroad held a separate 20th Century Limited run earlier this month, to mark the 55th anniversary of the history train’s final regular run before it became a museum piece.

The Dec. 30 excursion features the Hickory Creek observation car and the stainless steel Tavern-Lounge No. 43 car from the old New York Central line. Both cars have been borrowed from the United Railroad Historical Society of New Jersey.

Tickets for the excursion are $49-$149. More information is at rmne.org/north-by-northwest-express/.

If the “North by Northwest” train excursion sells out, there are tickets to see the movie only, at the Warner Theatre in Torrington. Tickets for the film only are $7 and available through warnertheatre.org. Train passengers and moviegoers are all encouraged to dress in 1950s attire, though it’s tough to match the sartorial splendor of Cary Grant or Eva Marie Saint.

Naugatuck Railroad has another event this week: a post-Christmas, adults-only “Holiday Spirits Express, Sippin’ with Santa” event (since Mr. Claus’ work is done for the year and he can relax now), Dec. 29 at 6 p.m. Tickets are $79. More information is at rmne.org/holiday-spirits-express-sippin-with-santa/.

Trolleys roll on train tracks too, and Connecticut has a couple of trolley museums that are still rolling at the end of the year.

The antique yet fully operating trolleys are running at the Shoreline Trolley Museum in East Haven this week, Dec. 28 from noon to 2 p.m. and Dec. 29 from 11 a.m. to 2 p.m. Tickets are $12, $10 for seniors and children.

Winterfest and the Tunnel of Lights at Connecticut Trolley Museum in East Windsor is running its trolleys through Dec. 30, every night from 5 to 9 p.m. Tickets are $15, $7.50 for museum members.

Contact reporter Christopher Arnott at carnott@courant.com.