Arcadian

...an effective little thriller that knows the conventions and doesn’t stray too far from them.

...a tightly wound horror, built on a trio of strong performances.

...it’s an extremely well-crafted survival tale.

Every time you think you have its physiognomy figured, some new sinew stretches or fluid erupts, something else to which the boys have to respond.

For a few minutes, “Arcadian” basically becomes “Aliens” on an Irish farm with Nicolas Cage in the Ripley role.