He also wrote a number of essays and articles for Playboy’s online website before establishing his own weekly self-distributed column, “Finn's Wake.” Finn worked for Chessex Manufacturing for a year, serving as their editor-in-chief, where he worked on a number of product lines including Lost Worlds, Sherlock Holmes, Consulting Detective, and helped design a variety of ancillary game product tie-ins for Vampire: the Masquerade, Call of Cthulhu, Chessex's Speckled Dice line, and others.

Finn returned to Texas in the late 1990s and formed Clockwork Storybook with fellow writers Chris Roberson, Matthew Sturges, and Bill Willingham.

Their monthly shared world anthology of urban fantasy centered on the fictitious city of San Cibola, California, and the magical inhabitants that lived side-by-side with the normal citizens.

Finn served as the creative director for the Violet Crown Radio Players, an audio theater troupe based in Austin, Texas, from 2002 to 2007.

He has written several original scripts to critical acclaim and also adapted novels and short stories to an old time radio format, most notably “The Adventures of Sailor Steve Costigan”, and “King Kong”, which was nominated for a B. Iden Payne award.