You can get it by calling global $wp_query and assigning post->ID to a variable.
<?php
global $wp_query;
$postid = $wp_query->post->ID;
echo get_post_meta($postid, 'top-headline', true);
?>
You can get it by calling global $wp_query and assigning post->ID to a variable.
<?php
global $wp_query;
$postid = $wp_query->post->ID;
echo get_post_meta($postid, 'top-headline', true);
?>