<?php
// The Query
$args=array (
'reihe' => 'bochum-detektive',
'posts_per_page' => -1,
'orderby'          => 'date',
'order' => DESC
);
$the_query = new WP_Query($args);
// The Loop
while ( $the_query->have_posts() ) :
$the_query->the_post();
?>