Humphrey Bogart and Swedish-born actress Ingrid Bergman in a scene from the 1943 classic film "Casablanca." (AP)

The movie will be shown on the Warner Brothers Casablanca Facebook page, beginning at 7 p.m. Eastern and Pacific Time. Viewers must start their viewing before 9 p.m. Pacific Time, and can only watch the movie once per Facebook account.

Starring Humphrey Bogart and Ingrid Bergman, “Casablanca” tops the American Film Institute’s list of the greatest love stories of all time. Reviewing the film in 1943 after it had entered wide release, Washington Post critic Nelson B. Bell wrote:

“Bearing no relation to present military activities in North Africa, ‘Casablanca,’ the new screen feature at the Earle Theatre, nevertheless, is sufficiently close to current events to gain impressively by the prevalence of its title in the news. An un-needed impetus.

On the sole basis of its superlative merit as humorous, romantic and tense entertainment, it would still take top rank as an engrossing drama, illuminated by the brilliant talents of an exceptional cast and the picturesqueness of a complete and imposing production. . . There are moments of exquisite suspense, high excitement, emotional warmth and delightful humor as events point themselves towards a climax of grim action and eminent justice that was accorded a rousing round of applause at yesterday’s first performance.”

The screening promotes the recent launch of the “Casablanca” three-disc Blu-Ray 70th anniversary edition, as well as “Inside the Script,” an illustrated eBook of the film’s shooting script, available on e-readers.