it might work this way:
$query = new WP_Query( array( 'post_type'=> 'Movies', 'actors' => array('peter-smith','mary-brown') ) );
(untested)(using the taxonomy ‘actors’ and the assumed slugs of the taxonomy terms ‘peter smith’ etc.)
https://codex.www.ads-software.com/Class_Reference/WP_Query#Taxonomy_Parameters – ‘simple taxonomy query’
or:
$query = new WP_Query( array( 'post_type'=> 'Movies', 'tax_query' => array( array(
'taxonomy' => 'actors',
'field' => 'slug',
'terms' => array('peter-smith','mary-brown') )
) );
(untested as I don’t have test data available)