How to filter the filtered?

The idea is simple, I'm using checkboxes to filter a list but I can't work out how to filter the results.

For example, checkbox for horror movies returns all the movies with a class of "horror", but I can't work out how to then continue to filter for a given day "today, weekdays or weekends" with only the results from the visible horror results. When clicking on a day type I'm returned ALL results that have that day type class.

Have a look at this fiddle

Here is the magic that needs a little help.

$('.tags').find('input:checkbox').on('click', function() {
  $('.results > div').hide();

  $('.tags').find('input:checked').each(function() {
    $('.results > div.' + $(this).attr('rel')).addClass('active').show();
  });

  $('input.dayCheck').on('change', function() {
    $('input.dayCheck').not(this).prop('checked', false);
  });
});