I never get tired of the space explorers who happen to stumble upon something unexpected during their other-planet discoveries. The trailer for The Last Days on Mars starring Liev Schreiber reveals just enough to show us that we’re in for a treat, without giving too much away. Check it out after the poster and synopsis!

On the last day of the first manned mission to Mars, a crew member of Tantalus Base believes he has made an astounding discovery – fossilized evidence of bacterial life. Unwilling to let the relief crew claim all the glory, he disobeys orders to pack up and goes out on an unauthorized expedition to collect further samples. But a routine excavation turns to disaster when the porous ground collapses, and he falls into a deep crevice and near certain death. His devastated colleagues attempt to recover his body. However, when another vanishes they start to suspect that the life-form they have discovered is not yet dead. As the group begins to fall apart it seems their only hope is the imminent arrival of the relief ship Aurora. Directed by Ruairi Robinson, starring Liev Schreiber, Romola Garai, Elias Koteas, Olivia Williams, Johnny Harris, Goran Kostic and Tom Cullen.

Trailer: The Last Days on Mars

The Last Days on Mars starring Liev Schreiber, Romola Garai, Elias Koteas, Olivia Williams, Johnny Harris, Goran Kostic and Tom Cullen is slated to hit theaters October 31, 2013.