The Mortal Instruments: City of Bones

Young adult books have proven to be highly successful on the big screen (Twilight, The Hunger Games), so when Cassandra Clare’s “The Mortal Instruments: City of Bones” came up to the bat, Sony Screen Gems decided to capitalize and made plans to produce the second installment, “City of Ashes.”

Those plans were halted after the first movie was a huge disaster with critics and audiences, with only half of the production costs earned back in domestic sales. They claimed “script incompletion” as the reason for no sequel, but the series actually moved to television with a show called “Shadowhunters.”