Jamaica Inn was the final film of Alfred Hitchcock's British period, made just before the director emigrated to Hollywood. Hitchcock was purportedly not very happy with the film, which he made quickly and cheaply, in a hurry to get to America. It's certainly not one of the director's most characteristic works, a period pirate drama based on a Daphne Du Maurier novel. It's obvious the director is distracted and not fully engaged, and the film is pretty much as dire as its reputation suggests, mostly lacking in Hitchcock's characteristic visual rigor. Instead, it's talky and plodding, with little to recommend it beyond some showy performances and the occasional nice visual flourish.
Maureen O'Hara, fresh-faced and beautiful, is "introduced" in the opening credits, since this was her very first starring role. As Mary, she's playing an avatar of innocence and goodness, stumbling into the center of a den of thieves when she goes to stay with her Aunt Patience (Marie Ney) and Uncle Joss (Leslie Banks). Joss, it turns out, is the leader of a group of pirates based at the Jamaica Inn, a base of operations from which they lure unsuspecting ships to crash on the rocks, plundering the shipwrecks and killing any survivors to coldbloodedly eliminate any witnesses. Joss, unbeknownst to Mary or anybody else, gets his orders from Sir Humphrey (Charles Laughton), a local dignitary who Mary has met and thinks of as an ally. When Mary arrives at the Jamaica Inn, she quickly disturbs the pirate gang's plans, freeing the pirate Trehearne (Robert Newton), who is being hanged as a traitor by the rest of the gang.
The film is primarily an acting showcase for Charles Laughton, shamelessly hamming it up as Sir Humphrey, a role substantially expanded and changed from the Du Maurier novel especially for Laughton to sink his teeth into. He seems to be having a blast playing this man living a double life as a well-respected lord and a smuggler boss. When he's not bellowing enthusiastically for his servants, he's pattering in a rapid stream of pretentious wordplay and speechifying, all bluster and stilted mannerisms. It's an over-the-top performance, though Laughton modulates his hysterics towards the end of the film, when he finally reveals his villainy to Mary, dropping all pretense and affecting more of a quietly sinister demeanor, projecting menace in silky tones. At this point, he becomes something of a memorably Hitchcockian villain, binding Mary and taking her away as he unleashes a mad stream of vitriol.
Hitchcock shows only sporadic signs of being visually engaged by this material. In one scene, as Trehearne tries to convince Patience to let him go, Hitchcock's camera whips rapidly back and forth again and again from one of them to the other as they exchange lines, arguing over the man's fate. Hitchcock also makes the scenes out in the countryside very stark and dark, set in a bleak rocky wasteland with perpetually gray and cloudy skies hanging above the hideously warped landscape. The exterior scenes have an eerie, minimalist artificiality that's bracing and potent, creating an evocative atmosphere. In one scene, as Trehearne and Mary hide from the pursuing pirate gang, Hitchcock places them in the foreground of the shot, in front of a jagged rocky wall that obscures them from the villains scurrying around in the background of the shot. The docks where Humphrey takes Mary at the end of the film are also moodily shot, covered in shadows, betraying the influence of German expressionism, though Hitchcock doesn't linger long in this foggy locale.
On the whole, though, such evocative moments are rare, and Jamaica Inn winds up being one of Hitchcock's very worst films. Hitchcock was on his way to Hollywood, and his first film there would be another Du Maurier adaptation, Rebecca, the sensuous style and psychological depth of which only confirms how slapdash and uncharacteristic this final British film was.