Sera Gerschtanowitz (daughter of the Rotterdam Tuschinski director) was married to Nathan Kleinkramer, son of Hartog Kleinkramer and Cornelia Kleinkramer-den Hartogh. Her parents-in-law lived at 104c Oostzeedijk in Rotterdam. Jewelry was hidden at their home. Sera Gerschtanowitz and her husband intended to flee to Switzerland. Upon returning to the home of his parents to fetch some hidden items of…