Gert van der Graaf, an infamous stalker who reveals how his childhood crush on Abba superstar Agnetha Fältskog turned into an obsession that shaped the rest of his life, thus showing how compulsive fandom can become criminal obsession. Fredrik Strage, Staffan Erfors, Rhonda Saunders, Gert van der Graaf, Paul Gambaccini Added on Amazon Prime 2023-07-23.