Nimrod Antal ('Vancancy') helms this Robert Rodriguez production, which wants to be the true follow-up to the Arnold Schwarzenegger action-adventure from the late 1980s. Rather than setting things on Earth, though, the action takes place in an alien junglescape that will test the skills and fortitude of a team of mercenaries and outcasts led by Oscar-winner Adrien Brody, who looks a bit like a Road Warrior-styled muscle car with able support from a steely-eyed Alice Braga. Grade: D-plus.  

What starts out as a promising sci-fi thriller about romantically linked biochemists (Adrien Brody and Sarah Polley) loses steam in an underwhelming third-act climax evidently affected by budgetary limits. There's a dash of 'Rosemary's Baby' in a film that wants to present more of a horrifying scientific moral dilemma than it's able to deliver. Grade: C-plus.