by Jörn Knabbe, Diedrich Michaelsen, Volker Mügge avg rating — 0 ratings — published Want to Read saving… Error rating book. Refresh and try again. Rate this book. Clear rating. 1 of 5 stars2 of 5 stars3 of 5 stars4 of 5 stars5 of 5 stars. Haarscharf am Abgrund vorbe... Haarscharf am Abgrund vorbei .