Yes, it is. Amazon Prime Video is the go-to place for bad movies. All you have to do is navigate over to their sci-fi selection and take your pick. From 1958 this is The Trollenberg Terror, featuring Forrest Tucker, Laurence Payne, Jennifer Jayne, and Janet Munro. This was distributed by Eros Films Ltd. out of Great Britain. Details are from Wikipedia.
The first thing that got me was the unevenness. The opening scene shows what is obviously an artist’s rendition of Trollenberg, the mountain. I figured they paid the artist $2.75 an hour 60 years ago to produce this, while later in the movie there are excellent location shots of mountains that could have been inserted. The graphic artists must have had a strong union.
Next we see climbers (Jeremy Longhurst and Anthony Parker) on the mountain in the Swiss Alps. This is maybe the second worst studio mountain ledge mock-up, but I do not recall what was number one. Anyhow, a climber above calls out in distress. He’s obviously being killed, and he falls, his descent snubbed by the safety line. When the survivors attempt to pull him up to the ledge, the one on the right relinquishes the task in horror. The man’s head has been torn off.
Next two sisters, Anne and Sarah Pilgrim (Munro and Jayne) are trying to get some sleep on a train traveling on the way to Geneva. Alan Brooks (Tucker) is trying to read a newspaper. He’s a UN investigator on his way to Trollenberg, the village.
Anne, who we later learn is the mental side of a mind-reading act from London, gets restless. She goes to the window to view the mountain. She sees Trollenberg (the mountain) and passes out on top of Brooks’ newspaper. So they meet.
But Anne no longer wants to go to Geneva. She wants to get off the train at Trollenberg (the village) and stay at the Trollenberg Inn.
And they all do. Brooks meets Philip Truscott (Payne), who later turns out to be a reporter, sent to investigate what Brooks is up to in Switzerland.
We also meet two climbers, Dewhurst (Stuart Saunders) and Brett (Andrew Faulds). We can guess things are not going to end well for Dewhurst and Brett.
Brooks takes the cable car up the mountain to the observatory of Professor Crevett (Warren Mitchell). They have a history. Previously the two had investigated mysterious goings on in the Andes. Now Crevett has an elaborate laboratory, courtesy of the Swiss government. It has all the features necessary to make for a successful movie plot. The walls are feet-thick concrete, and the place is equipped with TV scanners to monitor the mountain. Also, apparently, ionizing radiation scanners.
Meanwhile, back at the lodge, Anne demonstrates her mind-reading powers. She surmises, without seeing it, a 500-franc note and its serial number. And more. Plus, she and her sister are absolutely stunning—eye candy for men watching the movie.
So Dewhurst and Brett take the cable car and then hike up to the base hut on the mountain, in preparation for a climb the next day. Things go badly. Brett leaves the hut and never returns. Dewhurst goes to look for him.
When others go to the hut to investigate they find Dewhurst’s headless corpse. When a search party organizes to look for Brett, a search plane spots him up the mountain side. When two searchers arrive at the ledge where Brett was spotted, the first one to arrive discovers Dewhurst’s head in a knapsack. Then Brett appears and kills the two searchers with an ice ax.
All this is unknown to those down below, and when Brett arrives back at the lodge, he appears to have suffered some damage they cannot explain. Then Bret spots Anne in the lobby and lunges at her with a knife. He is subdued and placed in a locked cell. But he murders the guard and escapes, searching the lodge for Anne. She awakens when he enters her room, and she screams. Best movie scream I have seen in a long time. Academy Awards, anybody?
But Brooks enters from behind and shoots Brett dead.
Now Brooks has figured that an alien invasion is underway, and the mysterious cloud that hangs around one side of the mountain is a manifestation. The cloud is gradually drifting lower on the mountainside and is approaching the lodge. Brooks determines the safest place is the observatory at the top of the cable lift, and he orders an evacuation to the observatory. But Hans (Colin Douglas) decides to attempt to escape by car, through the cloud. He later shows up, having been unsuccessful, but much changed. When it becomes apparent he has been taken over by the aliens the others put him down.
The final cable car prepares to leave the village for the observatory. But a little girl is missing. Brooks goes back to the lodge, and finds she has gone to retrieve her ball. Brooks arrives just in time to rescue the child from an alien being with tentacles like an octopus and one big eye.
Back at the laboratory, all the survivors have collected within the concrete walls. On the TV scanners they can see the horrible aliens menacing the laboratory.
Brooks exits briefly to hurl a Molotov cocktail at one alien. When Truscott attempts to do another fire bombing, and alien grabs him. Brooks comes to the rescue.
Soon the aliens are all over the fortress laboratory. Brooks orders an air strike with fire bombs.
We see a Swiss bomber flying over and unloading fire bombs. Only they do not look like fire bombs. This is apparently stock footage of some general purpose (GP) munitions being unloaded.
The fire bombs kill off the aliens, and the mysterious cloud disappears. Sex becomes manifest as Truscott makes a bid for Anne, and Brooks gets cozy with Sarah.
And it’s a simple story, fairly well told. The monster aliens are a major F/X accomplishment, particularly showing up some of the amateurish studio sets. Wikipedia makes no mention of production cost or box office revenue. Despite the low-budget outdoor scenes, there is some excellent location shooting. We see airplanes banking and turning among towering mountain peaks, and the cable car exteriors are obviously not studio shoots. Acting is par for a B movie, and director Quentin Lawrence has done a smash-up job. Dramatic tension is skillfully introduced.