Finn grew up in Northern Ireland before moving to England to study and later teach in the department of Film and Literature at the University of Warwick. He completed his doctoral study on German folklore and popular cinema in 2012, and has published extensively in the fields of Film Studies and Gender Studies. Since 2008, he has been living and guiding in Berlin. He now works as a historical advisor for television and film productions set in Berlin, particularly during the Weimar era or Third Reich. He is a journalist for the 'Siegessauele', Europe's foremost Queer magazine, and organises events at Berlin's English-language bookstore 'Another Country'. Finn works for Berlin's Schwules Museum as a guide and curator. He is currently Professor of Gender and Sexuality Studies at the Council on International Educational Exchange.