Harper Prism was launched by John Silbersack, Publishing Director, in 1993 as the first science fiction

Science fiction

Science fiction is a genre of fiction dealing with imaginary but more or less plausible content such as future settings, futuristic science and technology, space travel, aliens, and paranormal abilities...

 and fantasy

Fantasy

Fantasy is a genre of fiction that commonly uses magic and other supernatural phenomena as a primary element of plot, theme, or setting. Many works within the genre take place in imaginary worlds where magic is common...

 imprint

Imprint

In the publishing industry, an imprint can mean several different things:* As a piece of bibliographic information about a book, it refers to the name and address of the book's publisher and its date of publication as given at the foot or on the verso of its title page.* It can mean a trade name...

 of HarperCollins

HarperCollins

HarperCollins is a publishing company owned by News Corporation. It is the combination of the publishers William Collins, Sons and Co Ltd, a British company, and Harper & Row, an American company, itself the result of an earlier merger of Harper & Brothers and Row, Peterson & Company. The worldwide...

 Publishers in the U.S.  Prism's early author

Author

An author is broadly defined as "the person who originates or gives existence to anything" and that authorship determines responsibility for what is created. Narrowly defined, an author is the originator of any written work.-Legal significance:...

s included Stephen Baxter

Stephen Baxter

Stephen Baxter is a prolific British hard science fiction author. He has degrees in mathematics and engineering.- Writing style :...

, Terry Pratchett

Terry Pratchett

Sir Terence David John "Terry" Pratchett, OBE is an English novelist, known for his frequently comical work in the fantasy genre. He is best known for his popular and long-running Discworld series of comic fantasy novels...

, Isaac Asimov

Isaac Asimov

Isaac Asimov was an American author and professor of biochemistry at Boston University, best known for his works of science fiction and for his popular science books. Asimov was one of the most prolific writers of all time, having written or edited more than 500 books and an estimated 90,000...

, and Clive Barker

Clive Barker

Clive Barker is an English author, film director and visual artist best known for his work in both fantasy and horror fiction. Barker came to prominence in the mid-1980s with a series of short stories which established him as a leading young horror writer...

 as well as many media and gaming tie-ins such as Magic: The Gathering

Magic: The Gathering

Magic: The Gathering , also known as Magic, is the first collectible trading card game created by mathematics professor Richard Garfield and introduced in 1993 by Wizards of the Coast. Magic continues to thrive, with approximately twelve million players as of 2011...

 and The X-Files

The X-Files

The X-Files is an American science fiction television series and a part of The X-Files franchise, created by screenwriter Chris Carter. The program originally aired from to . The show was a hit for the Fox network, and its characters and slogans became popular culture touchstones in the 1990s...

.

When HarperCollins acquired Avon Books in 1999, the Harper Prism imprint was absorbed into the Avon Eos line.