Forbidden Planet - 1956 - 7/10

Earth expeditionary force travels to far flung, scientific outpost, which has become incommunicado.
On arrival, officers meet the lone survivors: the colony’s linguist and his daughter.
All other scientists and colonials had been slaughtered by a mysterious, unstoppable force.
Long dormant, the murderous force reawakens.
Your grandfather’s SciFi, vintage yet quite watchable.
Eerie electronic score, good special effects (consider the year), and planet interior sets that are still impressive.
One of the few psychological SciFi’s, though that aspect is a bit heavy handed.