In 1942, Hans Scholl, Alexander Schmorell and other members of the Munich Resistance group the White Rose got in touch with Harnack through Lilo Ramdohr, a mutual friend who had gone to school with Harnack. Through him, they hoped to build a relationship with the Berlin Resistance members involved with Harnack's brother, Arvid,[4] Harro Schulze-Boysen, Hans von Dohnanyi and others. Harnack put them in touch with his cousins, Klaus and Dietrich Bonhoeffer.