'Gruppenfuhrer's Mistress' is book two in the series "The Girl from Berlin," which continues to follow Annalise's story. Caught up in a dangerous game between the Allies and Nazi Germany Secret Service - the RSHA - she's torn between staying faithful to her husband and yielding to the demands of her American superiors and start a romance with the unpredictable Chief of the RSHA, who she finds herself attracted to more and more every day...