Chris Hemsworth dives into the story behind this Marvel Phase Two adventure, explaining that Thor is torn between his responsibilities on Asgard and his love for Jane Foster (Natalie Portman) on Earth in a featurette for Thor: The Dark World. Co-stars Jaimie Alexander (Sif), Zachary Levi (Fandral), Ray Stevenson (Volstagg) and director Alan Taylor also reveal more details about this comic book adventure. In addition, Marvel Studios has released yet another clip, which finds Jane Foster grilling Thor with questions upon his return to Earth about their ultimate fate.