Liev Schreiber films action-packed scenes for Across The River And Into The Trees

Liev Schreiber, 53, links arms with girlfriend Taylor Neisen, 27, as they stroll through Venice

Liev Schreiber, 53, enjoys a stroll with girlfriend Taylor Neisen, 27, and dog Scout in Venice

Liev Schreiber shares laugh with Josh Hutcherson during filming Across The River And Into The Trees