Show author posts from a single category

Hi,

I currently have my tag.php page in my theme to only display posts from the ‘blog’ category (using a workaround fully described on this thread ).

The code below is what I use to make sure only posts in blog category (24) get displayed when looking at tag archives.

<?php
$current_tag = single_tag_title(“”, false);
query_posts(array(
‘cat’=>’24’,
‘tag_slug__and’=>array($current_tag),
) );
?>

Now I’m looking for author.php to do exactly the same thing.

Would any of you code maestros know how I could amend this code snippet to work on authors.php?

Any help would be massively appreciated.
Thanks!